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!")

​

# Output - Found!

​

fullstring = "StackAbuse"

substring_2 = "abuse"

​

if substring_2 in fullstring:

    print("Found!")

else:

    print("Not found!")

​

# Output - Not found! 

# (Remember this is case-sensitive)

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

def find_string(string,sub_string):

    return string.find(sub_string)

#.find() also accounts for multiple occurence of the substring in the given string

>>> string = "Hello World"

>>> # Check Sub-String in String

>>> "World" in string

True

>>> # Check Sub-String not in String

>>> "World" not in string

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!"

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")

if substring in string:

  substring_found = True