Python Array Methods
Python lists (often used as arrays) come with many built-in methods that make it easy to manage, modify, and analyze data stored in them.
Below is a rewritten explanation of common array methods, along with updated and original examples.
Common Array Methods
append() – Add an Item to the End
Adds a single element at the end of the list.
clear() – Remove All Elements
Deletes all items from the list, making it empty.
copy() – Create a Shallow Copy
Returns a new list with the same elements.
count() – Count Occurrences of a Value
Returns how many times a value appears in the list.
extend() – Add Multiple Elements
Adds elements from another iterable to the end of the list.
index() – Find Position of an Element
Returns the index of the first occurrence of a value.
insert() – Add an Element at a Specific Position
Inserts an element at the given index.
pop() – Remove an Element by Index
Removes and returns the element at the given position.
remove() – Remove an Element by Value
Removes the first matching value from the list.
reverse() – Reverse the List Order
Reverses the elements of the list in place.
sort() – Sort the List
Sorts the list in ascending order by default.
Sorting in descending order:
Summary of Array Methods
| Method | Purpose |
|---|---|
append()
|
Add item at the end |
clear()
|
Remove all elements |
copy()
|
Create a duplicate list |
count()
|
Count occurrences |
extend()
|
Add multiple items |
index()
|
Find element position |
insert()
|
Add item at specific index |
pop()
|
Remove item by index |
remove()
|
Remove item by value |
reverse()
|
Reverse list order |
sort()
|
Sort list elements |
