def isdecimal(a):
if _use_unicode(a) != unicode_:<EOL><INDENT>raise TypeError("<STR_LIT>")<EOL><DEDENT>return _vec_string(a, bool_, '<STR_LIT>')<EOL>
For each element, return True if there are only decimal
characters in the element.

Calls `unicode.isdecimal` element-wise.

Decimal characters include digit characters, and all characters
that that can be used to form decimal-radix numbers,
e.g. ``U+0660, ARABIC-INDIC DIGIT ZERO``.

Parameters
----------
a : array_like, unicode
    Input array.

Returns
-------
out : ndarray, bool
    Array of booleans identical in shape to `a`.

See also
--------
unicode.isdecimal