Python Lists

Table of contents

1. Creating a Python list
2. Length of a List
3. Accessing items of a List
• Indexing
• List Slicing
4. Iterating a List
5. Iterate along with an index number

• Adding elements to the list
• Append item at the end of the list
• Add item at the specified position in the list
• Using extend()
• Modify the items of a List
• Modify all items
• Removing elements from a List
• Remove specific item
• Remove all occurrence of a specific item
• Remove item present at given index
• Remove the range of items
• Remove all items
• Finding an element in the list
• Concatenation of two lists
• Copying a list
• Using assignment operator (=)
• Using the copy() method
• List operations
• Sort List using sort()
• Reverse a List using reverse()
• Python Built-in functions with List
• Using max() & min()
• Using sum()
• all()
• any()
• Nested List
• List Comprehension
• Summary of List operations

13.0 List Comprehension

List comprehension is a concise way to create lists in Python. It allows you to generate a new list by performing an operation on each item in an existing iterable (like a list, tuple, or range), in a single line of code.

Syntax of List Comprehension

[expression for item in iterable]

• expression: what you want to do with each item
• item: variable name representing each element in the iterable
• iterable: a sequence (like a list or range()) you loop through