String count()
Python String count() method returns the number of occurrences of a specified value in a string.
In this tutorial, we will learn the syntax and examples for count() method of String class.
Syntax
The syntax of String count() method in Python is
str.count(value, start, end)
where
| Parameter | Required/Optional | Description |
|---|---|---|
| value | Required | A string. The number of occurrences of this value is counted. |
| start | Optional | An integer. The index from which, the value has to be searched in this string. |
| end | Optional | An integer. The index until which, the value has to be searched in this string. |
Example
In this example, we will take a string 'abcdefabcdef', and find the number of occurrences of the value 'bc'.
Python Program
x = 'abcdefabcdef'
value = 'bc'
result = x.count(value)
print(f'Number of occurrences is : {result}') Try Online Output
Number of occurrences is : 2
Explanation
'abcdefabcdef' bc bc : total 2 occurrences
count() with Specific Start
In the following program, we will specify a starting position/index from which the search for the value value in the string has to happen.
Python Program
x = 'abcdefabcdef'
value = 'bc'
start = 5
result = x.count(value, start)
print(f'Number of occurrences is : {result}') Try Online Output
Number of occurrences is : 1
Explanation
'a b c d e f a b c d e f'
0 1 2 3 4 5 6 7 8 9 10 11
|
start=5 from this position
b c : total 1 occurrence count() with Specific Start and End
In the following program, we will specify a starting position/index from which the search for the value value in the string has to happen and the end position up until which the search for value in the string has to happen.
Python Program
x = 'abcd-abcd-abcd'
value = 'bc'
start = 5
end = 10
result = x.count(value, start, end)
print(f'Number of occurrences is : {result}') Try Online Output
Number of occurrences is : 1
Explanation
'a b c d - a b c d - a b c d'
0 1 2 3 4 5 6 7 8 9 10 11 12 13
| |
start=5 end=10
b c : total 1 occurrence Conclusion
In this Python Tutorial, we learned how to count number of occurrences of a value in given string using String method – count().