Python | Remove all digits from a list of strings

Difficulty Level : Basic
Last Updated : 11 Feb, 2019

Given a list of strings, write a Python program to remove all digits from the list of string.

Examples:

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning - Basic Level Course

Input : ['alice1', 'bob2', 'cara3']
Output : ['alice', 'bob', 'cara']

Input : ['4geeks', '3for', '4geeks']
Output : ['geeks', 'for', 'geeks']

Method #1 : Python Regex

Python regex pattern can also be used to find if each string contains a digit or not and converting them to “”.

# Python program to Remove all 
# digits from a list of string
import re
  
def remove(list):
    pattern = '[0-9]'
    list = [re.sub(pattern, '', i) for i in list]
    return list
  
# Driver code 
  
list = ['4geeks', '3for', '4geeks']
print(remove(list))

Output:

['geeks', 'for', 'geeks']

Method #2 : Using str.maketrans() method
The maketrans() method returns a translation table that maps each character in the intabstring into the character at the same position in the outtab string. In this particular problem we translate each each digit to “” using for loop.

# Python program to Remove all 
# digits from a list of string
from string import digits
  
def remove(list):
    remove_digits = str.maketrans('', '', digits)
    list = [i.translate(remove_digits) for i in list]
    return list
  
# Driver code 
  
list = ['4geeks', '3for', '4geeks']
print(remove(list))

Output:

['geeks', 'for', 'geeks']

Method #3 : Using str.isalpha() method
In ,this approach we use two for loops and check if the character of string is an alphabet or not. If yes, join it within the list, otherwise leave it.

# Python program to Remove all 
# digits from a list of string
from string import digits
  
def remove(list):
    list = [''.join(x for x in i if x.isalpha()) for i in list]
              
    return list
  
# Driver code 
  
list = ['4geeks', '3for', '4geeks']
print(remove(list))

Output:

['geeks', 'for', 'geeks']

My Personal Notes

Related Articles

Table of Contents

Python | Remove all digits from a list of strings

Start Your Coding Journey Now!