check to see if string contains a character python code example

Example 1: if substring not in string python

fullstring = "StackAbuse"
substring = "tack"

if fullstring.find(substring) != -1:
    print "Found!"
else:
    print "Not found!"

Example 2: python check if string contains one of characters list

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