numpy.strings.startswith

strings.startswith(a, prefix, start=0, end=None)[source]

Returns a boolean array which is True where the string element in a starts with prefix, otherwise False.

Parameters:

aarray-like, with StringDType, bytes_, or str_ dtype

prefixarray-like, with StringDType, bytes_, or str_ dtype

start, endarray_like, with any integer dtype

With start, test beginning at that position. With end, stop comparing at that position.

Returns:

outndarray

Output array of bools

See also

str.startswith

Examples

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>>> import numpy as np
>>> s = np.array(['foo', 'bar'])
>>> s
array(['foo', 'bar'], dtype='<U3')
>>> np.strings.startswith(s, 'fo')
array([True,  False])
>>> np.strings.startswith(s, 'o', start=1, end=2)
array([True,  False])

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