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NumPy char | count method

Programming
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Python
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NumPy
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Documentation
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Char
schedule Mar 10, 2022
Last updated
local_offer PythonNumPy
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Numpy's count(~) method returns a Numpy array containing the number of occurrences of the given substring in each of the input strings.

Parameters

1. a | array-like

The source array of strings.

2. sub | string

The substring to count.

3. startlink | int | optional

The starting index from which to count.

4. endlink | int | optional

The ending index until which to count.

Return value

A Numpy array of integers that represent the counts of the substrings in the input strings.

Examples

Simple count

np.char.count(["aacd", "abc"], "a")
array([2, 1])

Specifying a starting index

np.char.count(["aacd", "abc"], "a", start=1)
array([1, 0])

Since we are starting from index 1, we do not include the a at index 0.

Specifying an ending index

np.char.count(["aacd", "abc"], "a", end=1)
array([1, 1])

Since we ignore all characters including and after index 1, we only get a count of 1 for each.

robocat
Published by Isshin Inada
Edited by 0 others
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