numpy.core.defchararray.zfill(a, width)[source]
Return the numeric string left-filled with zeros
Calls str.zfill
element-wise.
Parameters: |
a : array_like, {str, unicode} Input array. width : int Width of string to left-fill elements in |
---|---|
Returns: |
out : ndarray, {str, unicode} Output array of str or unicode, depending on input type |
See also
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https://docs.scipy.org/doc/numpy-1.10.1/reference/generated/numpy.core.defchararray.zfill.html