How to Remove All Occurrences of a Character in a List Using Python

In Python, we can remove all occurrences of a character in a list by looping over each item in the list, and using the replace() function.

list_of_strings = ["This","is","a","list","of","strings","and","we","will","remove","certain","characters"]

def removeCharFromList(list, char):
    for i in range(0,len(list)):
        list[i] = list[i].replace(char,"")
    return list

print(removeCharFromList(list_of_strings,"a"))

#Output:
['This', 'is', '', 'list', 'of', 'strings', 'nd', 'we', 'will', 'remove', 'certin', 'chrcters']

When working with lists, being able to easily change, add or remove items in the list is important for efficient processing.

In Python, we can change items in a list easily.

One such change that we can make to a list to remove all occurrences of a character.

To remove all occurrences of a character in a list using Python, we can loop over each item in a list, and then use the Python string replace() function to replace all occurrences of a character in that element with an empty string.

Below is an example of how you can remove all occurrences of a character in a list with Python.

list_of_strings = ["This","is","a","list","of","strings","and","we","will","remove","certain","characters"]

def removeCharFromList(list, char):
    for i in range(0,len(list)):
        list[i] = list[i].replace(char,"")
    return list

print(removeCharFromList(list_of_strings,"a"))

#Output:
['This', 'is', '', 'list', 'of', 'strings', 'nd', 'we', 'will', 'remove', 'certin', 'chrcters']

How to Remove the First Character from Each Item in a List Using Python

We can also remove the first character from each element in a list easily using Python.

To remove the first character of each string in a list of strings in Python, we can adjust the code from above and use slicing.

Below is the Python code for removing the first character from each string in a list.

list_of_strings = ["This","is","a","list","of","strings","and","we","will","remove","certain","characters"]

def removeFirstCharFromList(list):
    for i in range(0,len(list)):
        list[i] = list[i][1:]
    return list

print(removeFirstCharFromList(list_of_strings))

#Output:
['his', 's', '', 'ist', 'f', 'trings', 'nd', 'e', 'ill', 'emove', 'ertain', 'haracters']

How to Remove the Last Character from Each Element in a List Using Python

We can also remove the last character from each element in a list easily using Python.

To remove the last character of each string in a list of strings in Python, we can adjust the code from above and use slicing.

Below is the Python code for removing the last character from each string in a list.

list_of_strings = ["This","is","a","list","of","strings","and","we","will","remove","certain","characters"]

def removeLastCharFromList(list):
    for i in range(0,len(list)):
        list[i] = list[i][:-1]
    return list

print(removeLastCharFromList(list_of_strings))

#Output:
['Thi', 'i', '', 'lis', 'o', 'string', 'an', 'w', 'wil', 'remov', 'certai', 'character']

Hopefully this article has been useful for you to learn how to remove all occurrences of a character in a list in Python.