python check if string in sting 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: how to check a string in if statement python

if var == 'stringone' or var == 'stringtwo':
    do_something()