Python String count() Method

The count() function returns the number of substring occurrences in the [start, end] range. Three parameters are required: a substring, the second start index, and the third is the last index in the range. Both start and end are optional, while substring is necessary.

The syntax of the method is: str.count(sub, start = 0,end = len(string)) 

Key Points :

• The count() function returns the number of occurrences of the substring in the given string.
• This method returns mainly an integer which specifies the number of a substring in a string.

count() string parameters

The count() method needs one execution parameter. However, two optional parameters are available:

• Substring: a string that is to be included in the count.
• start (Optional): The start index is an optional parameter used to specify the search string starting index.
• end (Optional): The end index is an optional parameter used to specify terminating point in the search string.

Below is the python program to demonstrate the count() function:

# Python program to demonstrate the 
# use of count() function
str = "Technology Motivator";
sub = "o";
print (str.count(sub, 12, 20))
sub = "Motivator";
print (str.count(sub))

When we run above the program, the outcome is as follows:

Output : 2 1

Below are several other functions that we can use to work with string in Python 3