check whether a string contains a substring 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

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

type(10) == str
# output: False

Example 3: python check if value in string

def is_value_in_string(value: str, the_string: str):
    return value in the_string.lower()

Example 4: python check if string contains substring

string = "My favourite programming language is Python"
substring = "Python"

if substring in string:
    print("Python is my favorite language")
elif substring not in string:
    print("Python is not my favourite language")