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numpy.iscomplex
numpy.iscomplex(x)[source]- 
    
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
 - 
      
xarray_like- 
        
Input array.
 
 - Returns
 - 
      
outndarray of bools- 
        
Output array.
 
 
See also
isrealiscomplexobj- 
       
Return True if x is a complex type or an array of complex numbers.
 
Examples
>>> np.iscomplex([1+1j, 1+0j, 4.5, 3, 2, 2j]) array([ True, False, False, False, False, True]) 
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 https://numpy.org/doc/1.20/reference/generated/numpy.iscomplex.html