#---------- Checking what numbers can do----------#
def approx(x):                # int attributes require 2.2+
    if hasattr(x,'__and__'):  # supports bitwise-and
        return x & ~0x0FL
    try:                      # supports real/imag
        return (round(x.real,2)+round(x.imag,2)*1j)
    except AttributeError:
        return round(x,2)