numpy.char.chararray.startswith
method
- 
chararray.startswith(self, prefix, start=0, end=None) - 
Returns a boolean array which is
Truewhere the string element inselfstarts withprefix, otherwiseFalse.See also
char.startswith 
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Licensed under the 3-clause BSD License.
    https://numpy.org/doc/1.18/reference/generated/numpy.char.chararray.startswith.html