how to check if string in string code example

Example 1: how to check if there is a word in a string in python

>>> str = "Messi is the best soccer player"
>>> "soccer" in str
True
>>> "football" in str
False

Example 2: python check if value in string

def is_value_in_string(value: str, the_string: str):
    return value in the_string.lower()