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if...else in Python List Comprehension
Created: January-31, 2021 | Updated: July-18, 2021
This tutorial will explain multiple ways to perform list comprehension with the if ... else statement in Python. A list comprehension is a short and syntactic way to create a list based on an existing list. It is usually used to create a new filtered or changed list from a current list.
For example, we have a python list ['Ali','Mark', None, 'Sara', None, 'Rahul'] and we want to create a new list ['Ali','Mark', '', 'Sara', '', 'Rahul'], we can do it by using list comprehension.
Python if ... else List Comprehension
The below example code demonstrates how we can create a changed list from the existing list using list comprehension with the if ... else statement:
my_list = ['Ali','Mark', None, 'Sara', None, 'Rahul'] new_list = [str[x.strip[]] if x is not None else '' for x in my_list] print[new_list]Output:
['Ali', 'Mark', '', 'Sara', '', 'Rahul']The general syntax of list comprehension in Python with if ... else is:
If condition is true for the list element x, f[x], any applicable function, is applied to the element; otherwise, g[x] will be applied.
Example code:
my_list = ['Ali','Mark', None, 'Sara', None, 'Rahul'] new_list = [x.upper[] if x is not None else '' for x in my_list] print[new_list]Output:
['ALI', 'MARK', '', 'SARA', '', 'RAHUL']Related Article - Python List
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