how to check in a string in an if function in python exist code example

Example 1: python string contains substring

fullstring = "StackAbuse"
substring = "tack"

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

Example 2: python check if string

type('hello world') == str
# output: True

type(10) == str
# output: False