Python from Scratch: Lists — append, insert, remove, pop, sort methods
In this lesson, we'll explore lists in Python—one of the most important data structures for beginners. Lists are used in almost every project: to store collections of numbers, strings, products, tasks, results, names, and any other data. In this video, we'll look at how to create lists, how to access them, and which built-in list functions and methods are most commonly used.
You'll learn:
What a list is and how a list differs from a string/number;
How to create a list and append elements;
Indexing and negative indices;
Slicing and how to get part of a list;
How to modify list elements (a list is a mutable data type);
How to loop through a list (for);
Built-in functions that are often used with lists:
len(), sum(), min(), max(), sorted() (and when they are appropriate);
Basic list methods and what they do:
append(), extend(), insert()
remove(), pop(), clear()
index(), count()
sort(), reverse()
copy() (and why it's important to understand copying);
Typical beginner mistakes:
confusing remove() and pop(),
modifying a list while looping,
"Why did sort() return None?",
copying list2 = list1, and unexpected list concatenation.
At the end of the lesson, there will be short practical examples: how to build a list, add elements, delete, sort, and calculate totals. This is a basic skill that will be useful later for topics such as strings, dictionaries, tuples, functions, working with files, algorithms, and problems.
👍 If you found this video helpful, give it a like.
💬 Tell us in the comments which list methods you confuse most often—I'll do a separate breakdown with exercises.
🔔 Subscribe—there will be strings, dictionaries, and practical problems to come.
Hashtags:
#Python #PythonSNulya #PythonLists #list #PythonLessons #Programming
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