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NumPy char | count method
schedule Mar 5, 2023
Last updated local_offer
Tags Python●NumPy
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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.
Published by Isshin Inada
Edited by 0 others
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