Returns a bool array, where True if input element is complex.
What is tested is whether the input has a non-zero imaginary part, not if the input type is complex.
| Parameters : | x : array_like 
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| Returns : | out : ndarray of bools 
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Examples
>>> np.iscomplex([1+1j, 1+0j, 4.5, 3, 2, 2j])
array([ True, False, False, False, False,  True], dtype=bool)