Usage count function in python

Python count () method

description

Python count () method is used in a number of statistical string of characters appears. Optional parameters at the beginning and end of the string search.

count () method syntax:

str.count(sub, start= 0,end=len(string))

　　

parameter

sub - substring search

start - the string to start the search. The default is the first character, the first character index value of zero.

end - the end of the search string position. Character index of the first character is 0. The default is the last position of the string.

return value

The method returns the number of substrings in the string appears.

The following example shows an example of count () method:

Example (Python 2.0+)

#!/usr/bin/python
  
str = "this is string example....wow!!!";
  
sub = "i";
print "str.count(sub, 4, 40) : ", str.count(sub, 4, 40)
sub = "wow";
print "str.count(sub) : ", str.count(sub)

　　Examples of the above output results are as follows:

str.count(sub, 4, 40) :  2
str.count(sub) :  1