how to check string in python code example

Example 1: if type is string python

isinstance(s, str)

Example 2: if substring not in string python

fullstring = "StackAbuse"
substring = "tack"

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

Example 3: python check if string in string

if "blah" not in somestring: 
    continue

Example 4: python check if string

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

type(10) == str
# output: False