if 'apples' in 'This string has apples':

    print('Apples in string')

else:

    print('Apples not in string')

fullstring = "StackAbuse"

substring = "tack"

​

if fullstring.find(substring) != -1:

    print "Found!"

else:

    print "Not found!"

​

fullstring = "StackAbuse"

substring = "tack"

​

if substring in fullstring:

    print "Found!"

else:

    print "Not found!"

>>> str = "Messi is the best soccer player"

>>> "soccer" in str

True

>>> "football" in str

False

fullstring = "StackAbuse"

substring = "tack"

​

if substring in fullstring:

    print("Found!")

else:

    print("Not found!")

from re import search

​

fullstring = "StackAbuse"

substring = "tack"

​

if search(substring, fullstring):

    print "Found!"

else:

    print "Not found!"

mystring = ["reddit", "google"]

mylist = ["a", "b", "c", "d"]

print [s for s in mystring if not any(x in s for x in mylist)]