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# Python String | count method

schedule Aug 10, 2023
Last updated
local_offer
Python
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Python's `str.count(~)` method counts the non-overlapping occurrences of a substring in a string.

# Parameters

1. `sub` | `string`

The substring that you wish to count the occurrence of.

2. `start`link | `number` | `optional`

The starting index of the source string to start counting from (inclusive). By default, `0`.

3. `end`link | `number` | `optional`

The index of the source string to stop counting at (exclusive). By default, `len(source string)`.

# Return value

The number of non-overlapping occurrences of the `sub` in the source string.

# Examples

## Basic usage

To count the number of times the substring `"e"` occurs in `"Awesome"`:

``` x = "Awesome"x.count("e") 2 ```

To count the number of times the substring `"aa"` occurs in `"aaa"`:

``` y = "aaa"y.count("aa") 1 ```

The returned count is `1` as we only count non-overlapping occurrences.

## Start parameter

To count the occurrence of the substring `"ab"` starting from index `1` (inclusive):

``` z = "abcd"z.count("ab", 1) 0 ```

As the search only starts from index `1` (`"b"`), we do not return any matching occurrences of `"ab"`.

## End parameter

To stop the counting at index `2` (exclusive):

``` w = "abcd"w.count("bc", 0, 2) 0 ```

As the search ends at and is exclusive of index `2` (`"c"`) , we do not return any matching occurrences of `"bc"`.

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