numpy.core.defchararray.count(arr, substring, start=0, end=None): Counts for the non-overlapping occurence of sub-string in the specified range.
arr : array-like or string to be searched.
substring : substring to search for.
start, end : [int, optional] Range to search in.
Returns : An integer array with the number of non-overlapping occurrences of sub-string.
arr : ['vdsdsttetteteAAAa', 'AAAAAAAaattttds', 'AAaaxxxxtt', 'AAaaXDSDdscz'] Count of 'tt' [2 2 1 0] Count of 'tt' [2 2 1 0] Count of 'tt' [1 2 1 0]
arr : ['vdsdsttetteteAAAa', 'AAAAAAAaattttds', 'AAaaxxxxtt', 'AAaaXDSDdscz'] Count of 'Aa' [1 1 1 1] Count of 'Aa' [1 0 0 0]
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