Let’s check how to check if a string contains a substring in Python.
Check if a string contains a substring
There is an easy trick which allow to check if a string contains another substring in Python.
my_string = 'This is my string'
print('string' in my_string)
This will return True boolean value.
Check if a string not contain a substring
To check if string does not contain substring just change to
my_string = 'This is my string'
print('string' not in my_string)
And this one returns False.