remove() is an inbuilt function in Python programming language that removes a given object from the list. It does not return any value.
Syntax:
list_name.remove(obj)
Parameters:
obj - object to be removed from the list
Returns:
The method does not return any value but removes the given object from the list.
Note:It removes the first occurrence of the object from the list.
Code#1:
# Python3 program to demonstrate the use of # remove() method # the first occurrence of 1 is removed from the list list1 = [ 1, 2, 1, 1, 4, 5 ] list1.remove(1) print(list1) # removes 'a' from list2 list2 = [ 'a', 'b', 'c', 'd' ] list2.remove('a') print(list2) |
Output:
[2, 1, 1, 4, 5] ['b', 'c', 'd']
Error:
It returns ValueError when the passed object is not present in the list
Code#2:
# Python3 program for the error in # remove() method # removes 'e' from list2 list2 = [ 'a', 'b', 'c', 'd' ] list2.remove('e') print(list2) |
Output:
Traceback (most recent call last):
File "/home/e35b642d8d5c06d24e9b31c7e7b9a7fa.py", line 8, in
list2.remove('e')
ValueError: list.remove(x): x not in list
Practical Application:
Given a list, remove all the 1’s from the list and print the list.
Code#3:
# Python3 program for practical application# of removing 1 untill all 1 are removed from the list list1 = [1, 2, 3, 4, 1, 1, 1, 4, 5] # looping till all 1's are removedwhile (list1.count(1)): list1.remove(1) print(list1) |
Output:
[2, 3, 4, 4, 5]
Given a list, remove all the 2’s from the list using in keyword
Code#4:
# Python3 program for practical application# of removing 2 until all 2 are removed from the list mylist = [1, 2, 3, 2, 2] # looping till all 2's are removedwhile 2 in mylist: mylist.remove(2) print(mylist) |
Output:
[1, 3]
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