Skip to content
Related Articles

Related Articles

Improve Article

Python – Custom space size padding in Strings List

  • Last Updated : 24 Feb, 2021
Geek Week

In this article given a Strings List, the task is to write a Python program to pad each string with spaces with specified leading and trailing number of spaces required.

Examples:

Input: test_list = [“Gfg”, “is”, “Best”], lead_size = 3, trail_size = 2

Output: [‘   Gfg  ‘, ‘   is  ‘, ‘   Best  ‘]

Explanation: Each word starts after 3 spaces and add 2 spaces after completion.



Input: test_list = [“Gfg”, “Best”], lead_size = 3, trail_size = 2

Output: [‘   Gfg  ‘, ‘   Best  ‘]

Explanation: Each word starts after 3 spaces and add 2 spaces after completion.

Method #1: Using loop

In this, we perform the task of adding trailing and leading required spaces using loop. The * operator is used to get required number of spaces.

Python3




# Python3 code to demonstrate working of
# Custom space size padding in Strings List
# Using loop
  
# initializing lists
test_list = ["Gfg", "is", "Best"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing padding numbers
lead_size = 3
trail_size = 2
  
res = []
for ele in test_list:
  
    # * operator handles number of spaces
    res.append((lead_size * ' ') + ele + (trail_size * ' '))
  
# printing result
print("Padded Strings : " + str(res))

Output:

The original list is : ['Gfg', 'is', 'Best']
Padded Strings : ['   Gfg  ', '   is  ', '   Best  ']

Method #2: Using list comprehension

Similar way as above, the only difference being the use of list comprehension as a one-liner alternative to solve problems.

Python3




# Python3 code to demonstrate working of
# Custom space size padding in Strings List
# Using list comprehension
  
# initializing lists
test_list = ["Gfg", "is", "Best"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing padding numbers
lead_size = 3
trail_size = 2
  
# using list comprehension for one liner alternative
res = [(lead_size * ' ') + ele + (trail_size * ' ') for ele in test_list]
  
# printing result
print("Padded Strings : " + str(res))

Output:

The original list is : ['Gfg', 'is', 'Best']
Padded Strings : ['   Gfg  ', '   is  ', '   Best  ']

 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




My Personal Notes arrow_drop_up
Recommended Articles
Page :