title
Arrays In Python | Python Array Operations | Python Tutorial For Beginners | Edureka
description
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This Edureka video on 'Arrays in Python' will help you establish a strong hold on all the fundamentals in python programming language. Below are the topics covered in this video:
1:15 What is an array?
2:53 Is python list same as an array?
3:48 How to create arrays in python?
7:19 Accessing array elements
9:59 Basic array operations
- 10:33 Finding the length of an array
- 11:44 Adding Elements
- 15:06 Removing elements
- 18:32 Array concatenation
- 20:59 Slicing
- 23:26 Looping
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detail
{'title': 'Arrays In Python | Python Array Operations | Python Tutorial For Beginners | Edureka', 'heatmap': [{'end': 336.927, 'start': 305.43, 'weight': 0.805}, {'end': 1542.906, 'start': 1504.659, 'weight': 1}], 'summary': 'This tutorial on python arrays covers the basics, operations, and manipulation. it includes differentiating arrays from lists, creating and accessing array elements, and various operations like finding length, adding/removing elements, concatenation, slicing, and looping. additionally, it explains array concatenation, slicing, and looping through arrays using for and while loops with detailed examples.', 'chapters': [{'end': 159.334, 'segs': [{'end': 56.296, 'src': 'embed', 'start': 11.169, 'weight': 0, 'content': [{'end': 13.913, 'text': "Hey everyone, welcome to Edureka's YouTube channel.", 'start': 11.169, 'duration': 2.744}, {'end': 18.661, 'text': "My name is Vajiha and today I'll be taking a session on arrays in Python.", 'start': 14.254, 'duration': 4.407}, {'end': 21.265, 'text': "So I hope everyone's ready to head start the session.", 'start': 18.981, 'duration': 2.284}, {'end': 24.61, 'text': "So let's move on in this session today guys.", 'start': 21.726, 'duration': 2.884}, {'end': 26.333, 'text': "I'll be covering the following topics.", 'start': 24.85, 'duration': 1.483}, {'end': 34.151, 'text': "First of all, I'll be explaining what exactly is an array and then I'll be differentiating between python lists and arrays.", 'start': 26.889, 'duration': 7.262}, {'end': 38.512, 'text': 'Now, this is a very common question that many of us ask after that.', 'start': 34.511, 'duration': 4.001}, {'end': 44.973, 'text': "I'll be showing you all how to create arrays in python, following which we will try to access array elements,", 'start': 38.672, 'duration': 6.301}, {'end': 53.035, 'text': 'and then we will try to perform some basic operations on arrays, such as finding the length of an array, adding and removing elements from it,', 'start': 44.973, 'duration': 8.062}, {'end': 56.296, 'text': 'array concatenation, slicing and looping through an array.', 'start': 53.035, 'duration': 3.261}], 'summary': 'Vajiha will cover array basics, creation, access, and operations in python.', 'duration': 45.127, 'max_score': 11.169, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA11169.jpg'}, {'end': 117.641, 'src': 'embed', 'start': 83.843, 'weight': 3, 'content': [{'end': 87.966, 'text': 'any variable that is declared as an array can hold more than one value.', 'start': 83.843, 'duration': 4.123}, {'end': 94.25, 'text': 'at the same time, all values in an array have a particular address, which is specified by its index number.', 'start': 87.966, 'duration': 6.284}, {'end': 96.671, 'text': 'Here as you can see on the screen.', 'start': 94.83, 'duration': 1.841}, {'end': 103.394, 'text': "I've declared a variable a as an array and I've stored values from 1 to 100 in my array, which is a.", 'start': 96.811, 'duration': 6.583}, {'end': 105.695, 'text': 'also make a note of the index values.', 'start': 103.394, 'duration': 2.301}, {'end': 109.237, 'text': 'indexing always starts from 0 and not from 1.', 'start': 105.695, 'duration': 3.542}, {'end': 117.641, 'text': 'therefore, a of 0 holds 1, a of 1 holds 2, a of 2 holds 3 and similarly a of 99 holds 100..', 'start': 109.237, 'duration': 8.404}], 'summary': "Arrays can hold multiple values, with indexing starting from 0. example: variable 'a' holds values 1 to 100.", 'duration': 33.798, 'max_score': 83.843, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA83843.jpg'}], 'start': 11.169, 'title': 'Python arrays: basics and operations', 'summary': 'Covers the basics of arrays in python, including differentiation between lists and arrays, creating arrays, accessing array elements, and performing operations like finding the length of an array, adding and removing elements, array concatenation, slicing, and looping through an array. an array is a data structure with ordered series of elements, and all values in an array have a particular address specified by its index number.', 'chapters': [{'end': 159.334, 'start': 11.169, 'title': 'Python arrays: basics and operations', 'summary': 'Covers the basics of arrays in python, including the definition of an array, differentiation between lists and arrays, creating arrays, accessing array elements, and performing operations like finding the length of an array, adding and removing elements, array concatenation, slicing, and looping through an array. an array is a data structure with ordered series of elements, and all values in an array have a particular address specified by its index number.', 'duration': 148.165, 'highlights': ['An array is a data structure with ordered series of elements, and all values in an array have a particular address specified by its index number. An array is a data structure with ordered series of elements, and any variable declared as an array can hold more than one value at the same time. Values in an array have a particular address specified by its index number.', 'Differentiating between python lists and arrays The session covers differentiating between python lists and arrays, providing clarity on their distinctions and use cases.', 'Creating arrays in python The session explains the process of creating arrays in Python, demonstrating the syntax and examples of creating arrays.', 'Accessing array elements and performing operations The chapter covers accessing array elements and performing operations like finding the length of an array, adding and removing elements from it, array concatenation, slicing, and looping through an array.', 'Ordered series of elements means that every element is present at its particular address, specified by its index value. Ordered series of elements means that every element is present at its particular address, specified by its index value. Elements are unique based on their index value and are ordered by the index values or addresses.']}], 'duration': 148.165, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA11169.jpg', 'highlights': ['Accessing array elements and performing operations like finding the length of an array, adding and removing elements from it, array concatenation, slicing, and looping through an array.', 'Creating arrays in Python, demonstrating the syntax and examples of creating arrays.', 'Differentiating between Python lists and arrays, providing clarity on their distinctions and use cases.', 'An array is a data structure with ordered series of elements, and any variable declared as an array can hold more than one value at the same time.']}, {'end': 437.964, 'segs': [{'end': 226.504, 'src': 'embed', 'start': 182.622, 'weight': 0, 'content': [{'end': 185.463, 'text': 'Whereas lists can store any data type values.', 'start': 182.622, 'duration': 2.841}, {'end': 193.785, 'text': 'So, for example, if I have an array of integer values, all values present in that array will be integers and nothing else.', 'start': 185.823, 'duration': 7.962}, {'end': 200.508, 'text': 'on the other hand, if I have a list, then it can store integers together with float and cares and strings, Etc.', 'start': 193.785, 'duration': 6.723}, {'end': 206.351, 'text': 'Now when you try to perform some operations like slicing or looping it will be similar for both.', 'start': 201.048, 'duration': 5.303}, {'end': 214.235, 'text': 'But when you try to perform different operations, like if you want to multiply your array values by 2 or you want to divide it by 2,', 'start': 206.711, 'duration': 7.524}, {'end': 219.997, 'text': 'you can do so easily when you have an array, but if you try to do the same with the list, it will throw an error,', 'start': 214.235, 'duration': 5.762}, {'end': 223.859, 'text': 'because naturally you cannot multiply cares and strings or divide them.', 'start': 219.997, 'duration': 3.862}, {'end': 226.504, 'text': "So I hope you're clear with the difference between these two.", 'start': 224.259, 'duration': 2.245}], 'summary': 'Lists can store various data types, but arrays are limited to one type. arrays allow easy mathematical operations, while lists may throw errors due to mixed data types.', 'duration': 43.882, 'max_score': 182.622, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA182622.jpg'}, {'end': 271.758, 'src': 'embed', 'start': 247.207, 'weight': 1, 'content': [{'end': 252.969, 'text': 'You can use three ways first is to import the array module by its original name, which is array.', 'start': 247.207, 'duration': 5.762}, {'end': 255.77, 'text': 'The second method is to use an alias name.', 'start': 253.369, 'duration': 2.401}, {'end': 261.231, 'text': 'This is the most widely and commonly used method as well in my demonstrations.', 'start': 256.368, 'duration': 4.863}, {'end': 262.932, 'text': "I'm going to be using this method.", 'start': 261.391, 'duration': 1.541}, {'end': 266.995, 'text': 'The third way is using star from array import star.', 'start': 263.453, 'duration': 3.542}, {'end': 271.758, 'text': "What this does is it's going to import all that is present in your array module.", 'start': 267.415, 'duration': 4.343}], 'summary': 'Three ways to import array module: original name, alias, and star import.', 'duration': 24.551, 'max_score': 247.207, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA247207.jpg'}, {'end': 336.927, 'src': 'heatmap', 'start': 305.43, 'weight': 0.805, 'content': [{'end': 306.471, 'text': 'As you can see over here.', 'start': 305.43, 'duration': 1.041}, {'end': 309.393, 'text': "I've created an array a using the first method.", 'start': 306.651, 'duration': 2.742}, {'end': 316.558, 'text': "So I have used array dot array of integer values and I've specified some random integer values here.", 'start': 309.853, 'duration': 6.705}, {'end': 318.96, 'text': 'The first array is the name of the module.', 'start': 316.678, 'duration': 2.282}, {'end': 323.443, 'text': "The second array is the array constructor and then I've given a type code.", 'start': 319.28, 'duration': 4.163}, {'end': 328.104, 'text': 'This type code specifies what type of elements my array will hold.', 'start': 323.983, 'duration': 4.121}, {'end': 329.885, 'text': "as you can see, I've created an array.", 'start': 328.104, 'duration': 1.781}, {'end': 333.566, 'text': "So I hope you're clear with how to create arrays using the first method.", 'start': 330.405, 'duration': 3.161}, {'end': 336.927, 'text': 'Now, let me open a new notebook and try the second method.', 'start': 334.026, 'duration': 2.901}], 'summary': 'The speaker discusses creating an array using the first method, specifying integer values and type code, and plans to demonstrate the second method in a new notebook.', 'duration': 31.497, 'max_score': 305.43, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA305430.jpg'}, {'end': 333.566, 'src': 'embed', 'start': 309.853, 'weight': 2, 'content': [{'end': 316.558, 'text': "So I have used array dot array of integer values and I've specified some random integer values here.", 'start': 309.853, 'duration': 6.705}, {'end': 318.96, 'text': 'The first array is the name of the module.', 'start': 316.678, 'duration': 2.282}, {'end': 323.443, 'text': "The second array is the array constructor and then I've given a type code.", 'start': 319.28, 'duration': 4.163}, {'end': 328.104, 'text': 'This type code specifies what type of elements my array will hold.', 'start': 323.983, 'duration': 4.121}, {'end': 329.885, 'text': "as you can see, I've created an array.", 'start': 328.104, 'duration': 1.781}, {'end': 333.566, 'text': "So I hope you're clear with how to create arrays using the first method.", 'start': 330.405, 'duration': 3.161}], 'summary': 'Demonstrated array creation using type codes and integer values.', 'duration': 23.713, 'max_score': 309.853, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA309853.jpg'}], 'start': 159.755, 'title': 'Python data structures', 'summary': "Compares python lists and arrays, highlighting lists' versatility and arrays' single data type restriction. it also explains creating arrays using the array module in python, covering three import methods and providing detailed examples.", 'chapters': [{'end': 226.504, 'start': 159.755, 'title': 'Python lists vs arrays', 'summary': 'Discusses the difference between python lists and arrays, highlighting that while lists can store any data type values, arrays can store only single data type values, and lists cannot perform certain operations like multiplication or division as easily as arrays.', 'duration': 66.749, 'highlights': ['Arrays can store only single data type values, while lists can store any data type values, including integers, floats, characters, and strings.', 'Performing certain operations like multiplication or division is easier with arrays than with lists, as lists cannot naturally multiply or divide different data types.']}, {'end': 437.964, 'start': 227.185, 'title': 'Creating arrays in python', 'summary': 'Demonstrates how to create arrays in python using the array module, discussing three methods of importing the module and creating arrays, with examples and explanations provided.', 'duration': 210.779, 'highlights': ["The chapter explains three methods of importing the array module in Python, including importing by original name, using an alias name, and importing all using 'from array import *'.", 'The speaker demonstrates creating arrays using each method, showcasing the process and providing examples with random integer values, highlighting the flexibility of data type choices.', 'The detailed explanation includes the use of type codes to specify the elements the array will hold, showcasing a practical approach and providing a clear understanding of the array creation process.']}], 'duration': 278.209, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA159755.jpg', 'highlights': ['Arrays can store only single data type values, while lists can store any data type values, including integers, floats, characters, and strings.', "The chapter explains three methods of importing the array module in Python, including importing by original name, using an alias name, and importing all using 'from array import *'.", 'The detailed explanation includes the use of type codes to specify the elements the array will hold, showcasing a practical approach and providing a clear understanding of the array creation process.', 'Performing certain operations like multiplication or division is easier with arrays than with lists, as lists cannot naturally multiply or divide different data types.']}, {'end': 594.961, 'segs': [{'end': 510.472, 'src': 'embed', 'start': 438.604, 'weight': 0, 'content': [{'end': 441.686, 'text': 'Our next topic for this session is accessing array elements.', 'start': 438.604, 'duration': 3.082}, {'end': 443.773, 'text': 'To access array elements.', 'start': 442.392, 'duration': 1.381}, {'end': 449.414, 'text': "You'll have to make use of the index values each index value holds a unique element.", 'start': 444.033, 'duration': 5.381}, {'end': 454.576, 'text': "Like I've told you before indexing starts from 0 and not from 1.", 'start': 449.915, 'duration': 4.661}, {'end': 458.618, 'text': 'So therefore a of 0 holds 1 a of 1 holds 2 and so on.', 'start': 454.576, 'duration': 4.042}, {'end': 464.6, 'text': 'This is the normal traversal order which starts from the left hand side and moves towards the right hand side.', 'start': 459.198, 'duration': 5.402}, {'end': 470.682, 'text': 'But here I want you all to note this point as well that negative indexing also exists.', 'start': 465, 'duration': 5.682}, {'end': 475.785, 'text': 'So negative indexing will start from the right hand side and move towards the left hand side.', 'start': 471.101, 'duration': 4.684}, {'end': 485.754, 'text': 'Therefore 100 will be at a of minus 1 99 will be at a of minus 2 and similarly one will be at a of minus 100.', 'start': 476.206, 'duration': 9.548}, {'end': 487.716, 'text': "So I hope you're clear with negative indexing.", 'start': 485.754, 'duration': 1.962}, {'end': 491.76, 'text': "Now, let's go to our Jupiter notebook and try to access some array elements.", 'start': 488.357, 'duration': 3.403}, {'end': 510.472, 'text': "As you can see over here, I've created a heading to create a heading.", 'start': 506.969, 'duration': 3.503}], 'summary': 'Access array elements using positive and negative indexing, starting from 0 and -1 respectively.', 'duration': 71.868, 'max_score': 438.604, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA438604.jpg'}], 'start': 438.604, 'title': 'Accessing array elements', 'summary': 'Covers accessing array elements through index values, including normal and negative indexing, and demonstrates how to access specific elements in an array using both positive and negative index values in a jupyter notebook.', 'chapters': [{'end': 594.961, 'start': 438.604, 'title': 'Accessing array elements', 'summary': 'Covers accessing array elements through index values, including normal and negative indexing, and demonstrates how to access specific elements in an array using both positive and negative index values in a jupyter notebook.', 'duration': 156.357, 'highlights': ['Accessing array elements through index values The speaker explains how to access array elements using index values, emphasizing that indexing starts from 0 and not from 1.', 'Demonstrating negative indexing The speaker highlights the existence of negative indexing, illustrating how it starts from the right-hand side and moves towards the left-hand side, with specific examples of accessing elements using negative index values.', 'Demonstrating accessing array elements in a Jupyter notebook The speaker demonstrates accessing array elements in a Jupyter notebook, showcasing the process of creating a heading and accessing specific array elements using both positive and negative index values.']}], 'duration': 156.357, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA438604.jpg', 'highlights': ['Accessing array elements through index values The speaker explains how to access array elements using index values, emphasizing that indexing starts from 0 and not from 1.', 'Demonstrating accessing array elements in a Jupyter notebook The speaker demonstrates accessing array elements in a Jupyter notebook, showcasing the process of creating a heading and accessing specific array elements using both positive and negative index values.', 'Demonstrating negative indexing The speaker highlights the existence of negative indexing, illustrating how it starts from the right-hand side and moves towards the left-hand side, with specific examples of accessing elements using negative index values.']}, {'end': 818.046, 'segs': [{'end': 655.272, 'src': 'embed', 'start': 595.922, 'weight': 0, 'content': [{'end': 599.843, 'text': 'Our next topic of this session is basic array operations here.', 'start': 595.922, 'duration': 3.921}, {'end': 604.804, 'text': 'I just want to tell you all something arrays are mutable, which means they are changeable.', 'start': 599.863, 'duration': 4.941}, {'end': 609.765, 'text': 'So, in case you want to add or remove elements from it, you can do so easily.', 'start': 605.084, 'duration': 4.681}, {'end': 616.246, 'text': 'now, coming back to our presentation, our first operation under this section will be finding the length of an array.', 'start': 609.765, 'duration': 6.481}, {'end': 623.287, 'text': 'The second is adding or changing elements of an array and then we will try to remove or delete elements of an array.', 'start': 616.646, 'duration': 6.641}, {'end': 630.293, 'text': 'and then guys we will try to perform array concatenation slicing and finally, we will be looping through an array.', 'start': 623.827, 'duration': 6.466}, {'end': 635.338, 'text': "Now, let's move on towards the first operation to find the length of an array.", 'start': 631.194, 'duration': 4.144}, {'end': 637.74, 'text': 'You will have to make use of the length function.', 'start': 635.498, 'duration': 2.242}, {'end': 644.787, 'text': 'Now this function returns an integer value, which is equal to the number of elements that are actually present in your array.', 'start': 638.241, 'duration': 6.546}, {'end': 648.771, 'text': 'The length function takes one parameter, which is the name of your array.', 'start': 645.207, 'duration': 3.564}, {'end': 651.051, 'text': 'As you can see in the example over here.', 'start': 649.271, 'duration': 1.78}, {'end': 655.272, 'text': "I've created some random array a and I've given some random values.", 'start': 651.352, 'duration': 3.92}], 'summary': 'Basic array operations: mutable, add/remove elements, find length, add/change elements, remove/delete elements, concatenate, slice, loop through array.', 'duration': 59.35, 'max_score': 595.922, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA595922.jpg'}, {'end': 818.046, 'src': 'embed', 'start': 730.658, 'weight': 4, 'content': [{'end': 732.764, 'text': "Let's have a look at a small example of these three.", 'start': 730.658, 'duration': 2.106}, {'end': 734.667, 'text': 'As you can see on the screen.', 'start': 733.467, 'duration': 1.2}, {'end': 742.55, 'text': "I've created some random array a and then I've used the append function and I've given the value that I want to add to my array,", 'start': 734.988, 'duration': 7.562}, {'end': 745.732, 'text': 'as you can see in the output 3.4,, which is the value.', 'start': 742.55, 'duration': 3.182}, {'end': 752.874, 'text': "I've specified to the pen function has been added to the end of my array, which is a and then I've used the extend function.", 'start': 745.912, 'duration': 6.962}, {'end': 759.677, 'text': 'Please make a note of here that when you use the extend function, you will have to specify the values between square brackets.', 'start': 753.314, 'duration': 6.363}, {'end': 762.718, 'text': "If you don't use the square brackets, it will throw an error.", 'start': 760.077, 'duration': 2.641}, {'end': 771.665, 'text': "I've given three new values and all three values have been added to the end of my array and then I've tried to use the insert function over here.", 'start': 763.238, 'duration': 8.427}, {'end': 778.771, 'text': "I've specified the index number as 2 and the value to be inserted at that position as 3.4.", 'start': 771.946, 'duration': 6.825}, {'end': 784.096, 'text': 'as you can see in the output, 3.4 has been inserted at C of 2.', 'start': 778.771, 'duration': 5.325}, {'end': 786.498, 'text': "now let's go to our Jupiter notebook and we'll do the same.", 'start': 784.096, 'duration': 2.402}, {'end': 809.459, 'text': "I'll reprint my array which is a so that it's easy for us to refer to it.", 'start': 805.515, 'duration': 3.944}, {'end': 815.844, 'text': 'Since my array a holds integer values.', 'start': 813.422, 'duration': 2.422}, {'end': 818.046, 'text': 'I will give some new integer value to it.', 'start': 816.145, 'duration': 1.901}], 'summary': 'Demonstration of array manipulation and functions in python, including append, extend, and insert, with specific examples and outcomes.', 'duration': 87.388, 'max_score': 730.658, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA730658.jpg'}], 'start': 595.922, 'title': 'Array operations and manipulation in python', 'summary': 'Covers basic array operations, such as finding length, adding/changing/removing elements, concatenation, and looping. it also discusses array length and adding elements with examples showing 3 and 6 elements. furthermore, it explains python array manipulation using append, extend, and insert functions with a successful usage example.', 'chapters': [{'end': 637.74, 'start': 595.922, 'title': 'Array operations introduction', 'summary': 'Covers basic array operations, highlighting the mutability of arrays, and the operations such as finding length, adding/changing elements, removing/deleting elements, array concatenation slicing, and looping through an array.', 'duration': 41.818, 'highlights': ['Arrays are mutable, allowing easy addition or removal of elements.', 'The operations covered include finding length, adding/changing elements, and removing/deleting elements.', 'Array concatenation slicing and looping through an array are also discussed.']}, {'end': 708.911, 'start': 638.241, 'title': 'Array length and adding elements', 'summary': 'Discusses the length function for arrays, demonstrating examples of how it returns the number of elements present in the array, with one example showing 3 elements and another showing 6 elements. it then briefly mentions moving on to adding elements to an array.', 'duration': 70.67, 'highlights': ['The length function returns the number of elements present in the array. The length function returns an integer value equal to the number of elements in the array, demonstrated with examples of arrays containing 3 and 6 elements.', "Example illustrating the length function with an array containing 6 elements. An example showcases an array named 'a' containing 6 elements, and the len function returns the integer value of 6.", 'Introduction to adding elements to an array. The chapter briefly mentions the next operation of adding elements to an array.']}, {'end': 818.046, 'start': 709.151, 'title': 'Python array manipulation', 'summary': 'Explains the append, extend, and insert functions for manipulating arrays in python, demonstrating the addition of elements to the end of an array and at specific positions, with an example showing successful usage of these functions.', 'duration': 108.895, 'highlights': ['The append function is used to add an element to the end of an array, as demonstrated by adding the value 3.4 to the array a, resulting in the output 3.4.', 'The extend function is utilized to add multiple elements to the end of an array, requiring the specification of values within square brackets to avoid errors.', 'The insert function allows the addition of a new element at a specific position in the original array, as shown by inserting the value 3.4 at index 2 in array a.']}], 'duration': 222.124, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA595922.jpg', 'highlights': ['Arrays are mutable, allowing easy addition or removal of elements.', 'The operations covered include finding length, adding/changing elements, and removing/deleting elements.', 'Array concatenation slicing and looping through an array are also discussed.', 'The length function returns the number of elements present in the array. The length function returns an integer value equal to the number of elements in the array, demonstrated with examples of arrays containing 3 and 6 elements.', 'The append function is used to add an element to the end of an array, as demonstrated by adding the value 3.4 to the array a, resulting in the output 3.4.', 'The extend function is utilized to add multiple elements to the end of an array, requiring the specification of values within square brackets to avoid errors.', 'The insert function allows the addition of a new element at a specific position in the original array, as shown by inserting the value 3.4 at index 2 in array a.']}, {'end': 1243.574, 'segs': [{'end': 906.33, 'src': 'embed', 'start': 849.554, 'weight': 0, 'content': [{'end': 851.515, 'text': 'Now, let me try to use the extend function.', 'start': 849.554, 'duration': 1.961}, {'end': 862.565, 'text': "Like I've told you all when you're using the extend function, you will have to make use of the square brackets.", 'start': 857.42, 'duration': 5.145}, {'end': 873.612, 'text': "As you can see in the output all the values that I've specified within the extend function have been added to the end of my array.", 'start': 866.826, 'duration': 6.786}, {'end': 875.594, 'text': 'Now, let me use the insert function.', 'start': 873.992, 'duration': 1.602}, {'end': 892.443, 'text': "I've used the insert function and the first parameter of specified is the index value and the second is the element to be inserted at this index position.", 'start': 883.3, 'duration': 9.143}, {'end': 901.005, 'text': 'So at index value a of 2 6 will be inserted as you can see in the output 6 has been inserted at a of 2.', 'start': 892.863, 'duration': 8.142}, {'end': 903.526, 'text': "So I hope you're clear with how to add elements to an array.", 'start': 901.005, 'duration': 2.521}, {'end': 906.33, 'text': "Now, let's move on towards the next operation.", 'start': 904.349, 'duration': 1.981}], 'summary': 'Demonstrating extend and insert functions to add elements to an array.', 'duration': 56.776, 'max_score': 849.554, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA849554.jpg'}, {'end': 946.707, 'src': 'embed', 'start': 923.178, 'weight': 1, 'content': [{'end': 931.782, 'text': 'The pop function can either take no parameters or one parameter the parameter it takes is the index value of the element to be removed.', 'start': 923.178, 'duration': 8.604}, {'end': 937.405, 'text': 'If you do not specify any parameter, it will remove the last element from the array.', 'start': 932.263, 'duration': 5.142}, {'end': 942.148, 'text': 'the remove function takes one parameter, which is the element to be removed itself.', 'start': 937.405, 'duration': 4.743}, {'end': 944.869, 'text': "Now, let's have a look at a small example of this.", 'start': 942.748, 'duration': 2.121}, {'end': 946.707, 'text': 'As you can see on the screen.', 'start': 945.546, 'duration': 1.161}], 'summary': 'The pop function removes elements by index, while the remove function takes the element itself as a parameter.', 'duration': 23.529, 'max_score': 923.178, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA923178.jpg'}, {'end': 1142.523, 'src': 'embed', 'start': 1115.63, 'weight': 4, 'content': [{'end': 1119.691, 'text': 'So in case you want to join different arrays, you can make use of the plus symbol.', 'start': 1115.63, 'duration': 4.061}, {'end': 1121.492, 'text': 'As you can see on the screen.', 'start': 1120.331, 'duration': 1.161}, {'end': 1127.795, 'text': "I've created some random array A and B and then I've created some random array C, which is empty.", 'start': 1121.612, 'duration': 6.183}, {'end': 1135.92, 'text': "also, make a note that all three arrays have the same type code, and then I've concatenated A and B into my empty array which is C.", 'start': 1127.795, 'duration': 8.125}, {'end': 1142.523, 'text': 'as you can see in the output, all the elements present in A and B have been concatenated into my array C.', 'start': 1135.92, 'duration': 6.603}], 'summary': 'Join arrays using the plus symbol; concatenated a and b into array c.', 'duration': 26.893, 'max_score': 1115.63, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1115630.jpg'}], 'start': 820.368, 'title': 'Array manipulation and operations in python', 'summary': 'Covers adding and removing elements in an array using python, including the usage of append, extend, insert, pop, and remove functions with examples and explanations. it also demonstrates array concatenation and the limitations of concatenating arrays with different data types.', 'chapters': [{'end': 989.281, 'start': 820.368, 'title': 'Array manipulation in python', 'summary': 'Covers adding and removing elements in an array, demonstrating how to use append, extend, insert, pop, and remove functions in python, with examples and explanations.', 'duration': 168.913, 'highlights': ['The insert function in Python allows inserting elements at a specified index position, as demonstrated by inserting 6 at index 2.', 'The pop function in Python can remove and return the last element if no parameter is specified, and can remove and return the element at a specified index, as illustrated by removing 3.1 at a specified index.', 'The remove function in Python can remove a specified element from the array, as exemplified by removing a specific value without returning it.', 'The extend function in Python adds multiple values to the end of an array, as shown by adding multiple specified values to the array.']}, {'end': 1243.574, 'start': 989.941, 'title': 'Array operations: pop, remove, and concatenation', 'summary': 'Demonstrates the usage of pop and remove functions to remove elements from an array, showcasing how the pop function removes elements by index and the remove function removes elements by value. it also illustrates array concatenation using the plus symbol, highlighting that arrays of different data types cannot be concatenated.', 'duration': 253.633, 'highlights': ['The pop function removes the last element of the array when no parameter is specified, while specifying an index removes the element at that index and returns it. The pop function without specifying any parameter removes the last element from the array, and specifying an index removes the element at that index and returns it.', 'The remove function removes the specified element from the array and does not return any value. The remove function removes the specified element from the array and does not return any value.', 'Array concatenation using the plus symbol joins elements from different arrays into a new array, and arrays of different data types cannot be concatenated. Array concatenation using the plus symbol joins elements from different arrays into a new array. It is also highlighted that arrays of different data types cannot be concatenated.']}], 'duration': 423.206, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA820368.jpg', 'highlights': ['The insert function in Python allows inserting elements at a specified index position, as demonstrated by inserting 6 at index 2.', 'The pop function in Python can remove and return the last element if no parameter is specified, and can remove and return the element at a specified index, as illustrated by removing 3.1 at a specified index.', 'The extend function in Python adds multiple values to the end of an array, as shown by adding multiple specified values to the array.', 'The remove function in Python can remove a specified element from the array, as exemplified by removing a specific value without returning it.', 'Array concatenation using the plus symbol joins elements from different arrays into a new array. It is also highlighted that arrays of different data types cannot be concatenated.']}, {'end': 1399.774, 'segs': [{'end': 1288.551, 'src': 'embed', 'start': 1243.974, 'weight': 0, 'content': [{'end': 1250.298, 'text': "So just be careful when you're concatenating arrays, you cannot concatenate arrays which hold different data type elements.", 'start': 1243.974, 'duration': 6.324}, {'end': 1257.507, 'text': "Okay, now let's move on towards our presentation and see what is the next operation.", 'start': 1252.685, 'duration': 4.822}, {'end': 1260.508, 'text': 'our next operation is slicing an array.', 'start': 1257.507, 'duration': 3.001}, {'end': 1264.71, 'text': 'slicing actually means fetching some particular values from your array.', 'start': 1260.508, 'duration': 4.202}, {'end': 1269.072, 'text': 'to do so, you can make use of the colon symbol, as you can see on the screen.', 'start': 1264.71, 'duration': 4.362}, {'end': 1274.726, 'text': "I've created some random array a and I've sliced it from 0 to 3.", 'start': 1269.372, 'duration': 5.354}, {'end': 1279.788, 'text': '0 specifies from where fetching has to start and 3 specifies where it has to stop.', 'start': 1274.726, 'duration': 5.062}, {'end': 1288.551, 'text': 'So it will start from 0 it will go on till 3 but it will not include the value which is present at 3 as you can see in the output.', 'start': 1280.288, 'duration': 8.263}], 'summary': 'Concatenating arrays with different data types is not possible. slicing involves fetching specific array values using the colon symbol, such as slicing an array from 0 to 3.', 'duration': 44.577, 'max_score': 1243.974, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1243974.jpg'}, {'end': 1389.55, 'src': 'embed', 'start': 1356.029, 'weight': 2, 'content': [{'end': 1359.53, 'text': 'He asks what does colon colon minus 1 mean?', 'start': 1356.029, 'duration': 3.501}, {'end': 1369.172, 'text': 'Shashank? unlike what many of us think, colon colon minus 1 does not reverse my array, but it prints a reversed copy of my array.', 'start': 1359.53, 'duration': 9.642}, {'end': 1371.052, 'text': "So let's try to do this over here.", 'start': 1369.612, 'duration': 1.44}, {'end': 1377.434, 'text': 'As you can see all the elements present in array D have been reversed.', 'start': 1373.233, 'duration': 4.201}, {'end': 1379.614, 'text': "Now, let's print our array which is D.", 'start': 1377.954, 'duration': 1.66}, {'end': 1389.55, 'text': 'The original array D is the same but colon colon minus 1 has reprinted a reversed copy of my array, which is D.', 'start': 1381.508, 'duration': 8.042}], 'summary': 'Using colon colon minus 1 in python does not reverse the array, it prints a reversed copy of the array.', 'duration': 33.521, 'max_score': 1356.029, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1356029.jpg'}], 'start': 1243.974, 'title': 'Array concatenation and slicing', 'summary': 'Covers array concatenation and slicing, including the inability to concatenate arrays with different data type elements, fetching specific values using the colon symbol for slicing, and the impact of using colon colon minus 1 for printing a reversed copy of an array and its memory exhaustiveness.', 'chapters': [{'end': 1399.774, 'start': 1243.974, 'title': 'Array concatenation and slicing operations', 'summary': 'Covers array concatenation and slicing, emphasizing the inability to concatenate arrays with different data type elements and the process of fetching specific values using the colon symbol for slicing. it also discusses the impact of using colon colon minus 1 for printing a reversed copy of an array and its memory exhaustiveness.', 'duration': 155.8, 'highlights': ['The inability to concatenate arrays with different data type elements is highlighted, emphasizing the importance of being cautious when performing array concatenation.', 'The process of fetching specific values from an array using the colon symbol for slicing is explained, with examples demonstrating the start and stop indices for slicing.', 'The impact of using colon colon minus 1 for printing a reversed copy of an array is discussed, highlighting its functionality and the associated memory exhaustiveness.', 'The concept of colon colon minus 1 printing a reversed copy of an array is clarified, addressing a common misconception and providing a clear understanding of its functionality.', 'The importance of being cautious when using colon colon minus 1 for printing a reversed copy of an array is emphasized, highlighting its potential memory exhaustiveness and suggesting alternative methods.']}], 'duration': 155.8, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1243974.jpg', 'highlights': ['The process of fetching specific values from an array using the colon symbol for slicing is explained, with examples demonstrating the start and stop indices for slicing.', 'The inability to concatenate arrays with different data type elements is highlighted, emphasizing the importance of being cautious when performing array concatenation.', 'The impact of using colon colon minus 1 for printing a reversed copy of an array is discussed, highlighting its functionality and the associated memory exhaustiveness.']}, {'end': 1665.165, 'segs': [{'end': 1471.923, 'src': 'embed', 'start': 1400.614, 'weight': 0, 'content': [{'end': 1406.616, 'text': "Now, let's get back to our presentation and perform the last operation of this session, which is looping through an array.", 'start': 1400.614, 'duration': 6.002}, {'end': 1411.097, 'text': 'You all might be familiar with these two loops, which is the for and the while loops.', 'start': 1407.176, 'duration': 3.921}, {'end': 1416.43, 'text': 'The for loop iterates over the items of an array specified number of times,', 'start': 1411.826, 'duration': 4.604}, {'end': 1421.854, 'text': 'whereas the while loop iterates until some condition is met or some condition is true.', 'start': 1416.43, 'duration': 5.424}, {'end': 1425.638, 'text': "when you're using the while loop, you will have to keep three things in mind.", 'start': 1421.854, 'duration': 3.784}, {'end': 1428.04, 'text': 'one is initializing your iterator.', 'start': 1425.638, 'duration': 2.402}, {'end': 1430.722, 'text': 'second is to specify a condition.', 'start': 1428.04, 'duration': 2.682}, {'end': 1432.904, 'text': 'third is to increment your iterator.', 'start': 1430.722, 'duration': 2.182}, {'end': 1437.928, 'text': 'Remember that if you do not increment your iterator your while loop will go on forever.', 'start': 1433.284, 'duration': 4.644}, {'end': 1440.25, 'text': "Let's see a small example of this.", 'start': 1438.649, 'duration': 1.601}, {'end': 1448.314, 'text': "As you can see on the screen, I've created some random array A and then I've used the for loop to loop through my array A.", 'start': 1440.99, 'duration': 7.324}, {'end': 1455.017, 'text': "I've used for x in A print x which means go to every element that is present in A and print it.", 'start': 1448.314, 'duration': 6.703}, {'end': 1457.878, 'text': "Let's try to do the same on our Jupyter notebook.", 'start': 1455.597, 'duration': 2.281}, {'end': 1467.883, 'text': 'Let me reprint my array D.', 'start': 1466.582, 'duration': 1.301}, {'end': 1471.923, 'text': 'Now, let me use the for loop to loop through this array.', 'start': 1469.241, 'duration': 2.682}], 'summary': 'Presentation on for and while loops, with examples and best practices.', 'duration': 71.309, 'max_score': 1400.614, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1400614.jpg'}, {'end': 1542.906, 'src': 'heatmap', 'start': 1504.659, 'weight': 1, 'content': [{'end': 1513.482, 'text': "As you can see over here, I've sliced my array from index number 0 to minus 3 and I've printed only those specific values using the for loop.", 'start': 1504.659, 'duration': 8.823}, {'end': 1517.003, 'text': "Now, let's go to our presentation and have a look at the while loop.", 'start': 1514.002, 'duration': 3.001}, {'end': 1521.825, 'text': "Like I've told you before when you're using the while loop, you will have to do three things.", 'start': 1517.603, 'duration': 4.222}, {'end': 1524.465, 'text': 'One is initializing your iterator.', 'start': 1522.345, 'duration': 2.12}, {'end': 1529.487, 'text': 'Second is to specify the condition and third is to increment your iterator.', 'start': 1524.826, 'duration': 4.661}, {'end': 1532.388, 'text': "Let's try to perform looping on our Jupiter notebooks.", 'start': 1529.987, 'duration': 2.401}, {'end': 1534.51, 'text': 'Please do it along with me guys.', 'start': 1533.007, 'duration': 1.503}, {'end': 1538.457, 'text': 'Let me reprint my array D.', 'start': 1535.151, 'duration': 3.306}, {'end': 1540.682, 'text': "Here I'm using the iterator as temp.", 'start': 1538.457, 'duration': 2.225}, {'end': 1542.906, 'text': 'You can use any name of your choice.', 'start': 1541.002, 'duration': 1.904}], 'summary': 'Demonstrating array slicing and looping with for and while loops in a jupiter notebook.', 'duration': 38.247, 'max_score': 1504.659, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1504659.jpg'}, {'end': 1542.906, 'src': 'embed', 'start': 1514.002, 'weight': 4, 'content': [{'end': 1517.003, 'text': "Now, let's go to our presentation and have a look at the while loop.", 'start': 1514.002, 'duration': 3.001}, {'end': 1521.825, 'text': "Like I've told you before when you're using the while loop, you will have to do three things.", 'start': 1517.603, 'duration': 4.222}, {'end': 1524.465, 'text': 'One is initializing your iterator.', 'start': 1522.345, 'duration': 2.12}, {'end': 1529.487, 'text': 'Second is to specify the condition and third is to increment your iterator.', 'start': 1524.826, 'duration': 4.661}, {'end': 1532.388, 'text': "Let's try to perform looping on our Jupiter notebooks.", 'start': 1529.987, 'duration': 2.401}, {'end': 1534.51, 'text': 'Please do it along with me guys.', 'start': 1533.007, 'duration': 1.503}, {'end': 1538.457, 'text': 'Let me reprint my array D.', 'start': 1535.151, 'duration': 3.306}, {'end': 1540.682, 'text': "Here I'm using the iterator as temp.", 'start': 1538.457, 'duration': 2.225}, {'end': 1542.906, 'text': 'You can use any name of your choice.', 'start': 1541.002, 'duration': 1.904}], 'summary': 'Explaining the three steps for using while loop in programming.', 'duration': 28.904, 'max_score': 1514.002, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1514002.jpg'}], 'start': 1400.614, 'title': 'Looping through arrays and in python', 'summary': 'Covers looping through arrays using for and while loops, emphasizing the significance of initializing, specifying a condition, and incrementing the iterator. it also explains the concepts of for loop, while loop, and slicing arrays in python, demonstrating their usage in a jupyter notebook.', 'chapters': [{'end': 1440.25, 'start': 1400.614, 'title': 'Looping through an array', 'summary': 'Covers looping through an array using for and while loops, emphasizing the significance of initializing, specifying a condition, and incrementing the iterator in a while loop to avoid an infinite loop.', 'duration': 39.636, 'highlights': ['Emphasizing the significance of initializing, specifying a condition, and incrementing the iterator in a while loop to avoid an infinite loop', 'Covering the for loop which iterates over the items of an array specified number of times', 'Introducing the while loop which iterates until some condition is met or some condition is true', 'Mentioning the consequence of not incrementing the iterator in a while loop, leading to an infinite loop']}, {'end': 1665.165, 'start': 1440.99, 'title': 'Looping in python', 'summary': 'Explains the concepts of for loop, while loop, and slicing arrays in python, demonstrating their usage in a jupyter notebook and emphasizing the importance of initializing iterator, specifying condition, and incrementing iterator for the while loop.', 'duration': 224.175, 'highlights': ['The chapter demonstrates the usage of for loop to iterate through an array in a Jupyter notebook, printing each element, and slicing the array to print specific values, showcasing practical implementation (e.g., printing specific elements after slicing the array).', 'The presenter emphasizes the importance of initializing the iterator, specifying the condition, and incrementing the iterator for the while loop, providing a clear explanation of the process and demonstrating the practical implementation using a Jupyter notebook.', 'The while loop is exemplified by using the len function to iterate through an array in a Jupyter notebook, printing each element, showcasing the practical application of the len function in looping through an array.']}], 'duration': 264.551, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/phRshQSU-xA/pics/phRshQSU-xA1400614.jpg', 'highlights': ['Covering the for loop which iterates over the items of an array specified number of times', 'Introducing the while loop which iterates until some condition is met or some condition is true', 'Emphasizing the significance of initializing, specifying a condition, and incrementing the iterator in a while loop to avoid an infinite loop', 'The chapter demonstrates the usage of for loop to iterate through an array in a Jupyter notebook, printing each element, and slicing the array to print specific values, showcasing practical implementation (e.g., printing specific elements after slicing the array)', 'The presenter emphasizes the importance of initializing the iterator, specifying the condition, and incrementing the iterator for the while loop, providing a clear explanation of the process and demonstrating the practical implementation using a Jupyter notebook', 'Mentioning the consequence of not incrementing the iterator in a while loop, leading to an infinite loop']}], 'highlights': ['Accessing array elements and performing operations like finding the length of an array, adding and removing elements from it, array concatenation, slicing, and looping through an array.', 'Creating arrays in Python, demonstrating the syntax and examples of creating arrays.', 'Differentiating between Python lists and arrays, providing clarity on their distinctions and use cases.', 'Arrays can store only single data type values, while lists can store any data type values, including integers, floats, characters, and strings.', "The chapter explains three methods of importing the array module in Python, including importing by original name, using an alias name, and importing all using 'from array import *'.", 'Accessing array elements through index values The speaker explains how to access array elements using index values, emphasizing that indexing starts from 0 and not from 1.', 'Arrays are mutable, allowing easy addition or removal of elements.', 'The length function returns the number of elements present in the array. The length function returns an integer value equal to the number of elements in the array, demonstrated with examples of arrays containing 3 and 6 elements.', 'The append function is used to add an element to the end of an array, as demonstrated by adding the value 3.4 to the array a, resulting in the output 3.4.', 'The extend function is utilized to add multiple elements to the end of an array, requiring the specification of values within square brackets to avoid errors.', 'The insert function allows the addition of a new element at a specific position in the original array, as shown by inserting the value 3.4 at index 2 in array a.', 'The insert function in Python allows inserting elements at a specified index position, as demonstrated by inserting 6 at index 2.', 'The pop function in Python can remove and return the last element if no parameter is specified, and can remove and return the element at a specified index, as illustrated by removing 3.1 at a specified index.', 'The extend function in Python adds multiple values to the end of an array, as shown by adding multiple specified values to the array.', 'The remove function in Python can remove a specified element from the array, as exemplified by removing a specific value without returning it.', 'Array concatenation using the plus symbol joins elements from different arrays into a new array. It is also highlighted that arrays of different data types cannot be concatenated.', 'The process of fetching specific values from an array using the colon symbol for slicing is explained, with examples demonstrating the start and stop indices for slicing.', 'The inability to concatenate arrays with different data type elements is highlighted, emphasizing the importance of being cautious when performing array concatenation.', 'The impact of using colon colon minus 1 for printing a reversed copy of an array is discussed, highlighting its functionality and the associated memory exhaustiveness.', 'Covering the for loop which iterates over the items of an array specified number of times', 'Introducing the while loop which iterates until some condition is met or some condition is true', 'Emphasizing the significance of initializing, specifying a condition, and incrementing the iterator in a while loop to avoid an infinite loop', 'The chapter demonstrates the usage of for loop to iterate through an array in a Jupyter notebook, printing each element, and slicing the array to print specific values, showcasing practical implementation (e.g., printing specific elements after slicing the array)', 'The presenter emphasizes the importance of initializing the iterator, specifying the condition, and incrementing the iterator for the while loop, providing a clear explanation of the process and demonstrating the practical implementation using a Jupyter notebook', 'Mentioning the consequence of not incrementing the iterator in a while loop, leading to an infinite loop']}