python check if a string has a character code example

Example 1: how to check if all characters in string are same python

s == len(s) * s[0]

Example 2: python check if value in string

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

Example 3: python check if string contains one of characters list

if any(ext in url_string for ext in extensionsToCheck):
    print(url_string)