Apr 14, 2020 · Here’s your free PDF cheat sheet showing you all Python list methods on one simple page. Click the image to download the high-resolution PDF file, print it, and post it to your office wall:

List Methods l . a p p end (x) append x to end of list l . i ns ert (I, x ) insert x at position i l . rem ove (x) remove first occurrence of x l . revers e() reverse list in place Dictionary Methods d . key s() returns a list of keys d . va lu es() returns a list of values d . item s returns a list of (key, value)

Oct 24, 2024 · Python list methods are built-in functions that allow us to perform various operations on lists, such as a dding, removing, or modifying elements. In this article, we’ll explore all Python list methods with a simple example.

Mar 3, 2025 · Python Functions. Python Functions are a collection of statements that serve a specific purpose. The idea is to bring together some often or repeatedly performed actions and construct a function so that we can reuse the code included in it rather than writing the same code for different inputs over and over.

Removes all elements from the list lst–which becomes empty. Returns a copy of the list lst. Copies only the list, not the elements in the list (shallow copy). Counts the number of occurrences of element x in the list lst. Adds all elements of an iterable iter (e.g. another list) to the list lst.

Python provides many built-in functions and methods for list manipulation. This function is used to get the index of first matched item from the list. It returns index value of item to search. This function is used to add items to the end of the list. Note: append() funtion will add the new item but not return any value. Let us understand this:

Lambda Functions Basic Syntax python lambda arguments: Example python add = lambda x, (add( print expression # Output: 8 Copy code Copy code Copy code functions , numbers)) 16, 25] # Using lambda with built—in numbers = squared — list map lambda x: (squared) [1, print # Output: Recursion python (n): def factorial '"Returns the factorial of n.""

Functions are blocks of reusable code that perfrom a single task. You use def to define (or create) a new function then you call a function by adding parameters to the function name.

loop through the list items by referring to their index number. Use the range() and len() functions to create a suitable iterable. loop through the list items by using a while loop. List comprehension offers a shorter syntax when you want to create a new list based on the values of an existing list.

LIST FUNCTIONS Some list functions: append(x)· insert(i, x)· remove(x)· pop(i=-1)· index(x)· count(x)· sort()· reverse() Lists as stacks: Use append(x) to push items and pop() to pop them Lists as queues: Use append(x) to enqueue items and pop(0) to dequeue them Not efficient! Use deque from the collections module.