Does Python have a string 'contains' substring method?

Yes, Python has a string method called str.__contains__() that allows you to check if a string contains another string. You can also use the in keyword to check if a string contains another string. Note: The in operator is the recommended, Pythonic way to check for substrings.

Here is an example of how to use the str.__contains__() method:

Using string's __contains__() method in Python to find a substring inside it

string = "Hello, World!"
substring = "World"

# Using the str.__contains__() method
if string.__contains__(substring):
    print("The substring '{}' is present in the string '{}'.".format(substring, string))
else:
    print("The substring '{}' is not present in the string '{}'.".format(substring, string))

<div class="alert alert-info flex not-prose"> <span class="hidden md:block">Watch a video course </span> Python - The Practical Guide</div>

And here is an example of how to use the in keyword:

Using Python in operator to check if a substring exists inside a string

sentence = "The quick brown fox jumps over the lazy dog."

if "cat" in sentence:
    print("The string contains the substring 'cat'.")
else:
    print("The string does not contain the substring 'cat'.")