For each element, return True if there are only numeric characters in the element.
Calls unicode.isnumeric element-wise.
Numeric characters include digit characters, and all characters that have the Unicode numeric value property, e.g. U+2155, VULGAR FRACTION ONE FIFTH.
| Parameters : | a : array_like, unicode 
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|---|---|
| Returns : | out : ndarray, bool 
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See also
unicode.isnumeric