def split_complex(list_complex):
    """
    Returns the real and imaginary part in two separate lists. 
    [list_re, list_im] = split_complex(list_complex)
    """ 
    list_real = []
    list_imag = []
    for i in range(len(list_complex)):
        list_real.append(list_complex[i].real)
        list_imag.append(list_complex[i].imag)
    return (list_real, list_imag)