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Python | Append suffix/prefix to strings in list

  • Last Updated : 27 Sep, 2019

Sometimes, while working with Python, we can a problem in which we need to pad strings in lists at trailing or leading position. This kind of problem is quite common and can occur in day-day programming or web development. Let’s discuss a way in which this task can be performed.

Method : Using + operator + list comprehension

In this task, we just append the string at rear or front position using + operator and list comprehension is used to iterate through all the elements.

# Python3 code to demonstrate working of
# Append suffix / prefix to strings in list
# Using list comprehension + "+" operator
# initializing list
test_list = ['a', 'b', 'c', 'd']
# printing list
print("The original list : " + str(test_list))
# initializing append_str
append_str = 'gfg'
# Append suffix / prefix to strings in list
pre_res = [append_str + sub for sub in test_list]
suf_res = [sub + append_str for sub in test_list]
# Printing result
print("list after prefix addition : " + str(pre_res))
print("list after suffix addition : " + str(suf_res))
Output :
The original list : ['a', 'b', 'c', 'd']
list after prefix addition : ['gfga', 'gfgb', 'gfgc', 'gfgd']
list after suffix addition : ['agfg', 'bgfg', 'cgfg', 'dgfg']

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