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Python | Check if substring is part of a list of strings

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Method # 1: Using join()
The main approach that can be used to accomplish this particular task is to calculate the concatenation of all the rows of a list and then search for a string in a concatenated string.

# Python3 code to demonstrate how it works
# Check if whether the substring is part of a list of strings
# Using join ()

 
# initializing list

test_list = [ ’GeeksforGeeks’ , ’is’ , ’ Best’ ]

 
# test line

check_str = "for"

 
# print the original line

print ( " The original string is: " + str (test_list))

 
# Using join ()
# Check if the substring is part of a list of strings

temp = ’’ . join (test_list)

res = check_str < code class = "keyword"> in temp

 
# print result

print ( "Is check string part of any input list string:" + str (res))

Output:

 The original string is: [’GeeksforGeeks’,’ is’, ’Best’] Is check string part of any input list string: True 

Method # 2: using any()
Any function can be used to calculate the presence of a test substring in all lines of the list and return True if it is found in any. This is better than the above function as it clearly does not take up space to create a new concatenated row.

# Python3 code to demonstrate how it works
# Check if the substring is part of a list of strings
# Using any ()

 
# initializing list

test_list = [ ’GeeksforGeeks’ , ’ is’ , ’Best’ ]

 
# test line

check_str = "for"

 
# print original line

print ( "The original string is:" + str (test_list))

  
# Using any ()
# Check if the substring is part of the string list

res = any (check_str in sub for sub in test_list)

 
# print result

print ( " Is check string part of any input list string: " + str (res))

Output:

 The original string is: [’GeeksforGeeks’,’ is’, ’Best’] Is check string part of any input list string: True 

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