Python-Codes/String/Count_String.Py at master · sahilrider/Python-Codes

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import re #Regular Expressions Module

'''

..Function compile()

It compiles regular expression pattern into a regular expression object, which can be used for matching using its match() and search() methods.

..Function findall()

It return all non-overlapping matches of pattern in string, as a list of strings.

For much detailed explanation -->

https://docs.python.org/2/library/re.html

'''

def count_substring(string, sub_string):

c=0

for i in range(0,len(string)):

if string[i:i+len(sub_string)]==sub_string:

c+=1

return c

def count_substring1(string, sub_string):

p=re.compile(sub_string)

a=p.findall(string)

return len(a)

if __name__ == '__main__':

string = input().strip()

sub_string = input().strip()

count = count_substring1(string, sub_string)

print(count)

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