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numpy.char.chararray.count
method
chararray.count(self, sub, start=0, end=None)-
Returns an array with the number of non-overlapping occurrences of substring
subin the range [start,end].See also
char.count
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Licensed under the 3-clause BSD License.
https://docs.scipy.org/doc/numpy-1.17.0/reference/generated/numpy.char.chararray.count.html