Python | Filter list of strings based on the substring list
Given two lists of strings string and substr, write a Python program to filter out all the strings in string that contains string in substr.
Examples:
Input : string = ['city1', 'class5', 'room2', 'city2']
substr = ['class', 'city']
Output : ['city1', 'class5', 'city2']
Input : string = ['coordinates', 'xyCoord', '123abc']
substr = ['abc', 'xy']
Output : ['xyCoord', '123abc']
Method #1 : Using List comprehension
We can Use list comprehension along with in operator to check if the string in ‘substr’ is contained in ‘string’ or not.
# Python3 program to Filter list of # strings based on another list import re def Filter(string, substr): return [str for str in string if any(sub in str for sub in substr)] # Driver code string = ['city1', 'class5', 'room2', 'city2'] substr = ['class', 'city'] print(Filter(string, substr)) |
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filter_none
Output:
['city1', 'class5', 'city2']
Method #2 : Python Regex
# Python3 program to Filter list of # strings based on another list import re def Filter(string, substr): return [str for str in string if re.match(r'[^\d]+|^', str).group(0) in substr] # Driver code string = ['city1', 'class5', 'room2', 'city2'] substr = ['class', 'city'] print(Filter(string, substr)) |
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filter_none
Output:
['city1', 'class5', 'city2']
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