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Wed Jan 24 05:11:18 CET 2007 · https://mail.python.org/pipermail/python-dev/2007-January/070766.html

> If "real" and "imag" are themselves complex numbers, then normalizing
> the result will move the imaginary portion of the "real" vector into
> the imaginary part and vice versa.

Not quite.

>>> complex(1,1j)
0j
>>> complex(0,1j)
(-1+0j)

So it moves the imaginary portion of the "imag" argument into the real part
of the result with change of sign, on the basis that 1j*1j == -1.

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[Python-Dev] compex numbers (was Floor Division)