argument of a transfer function

My transfer function is the following :

$$ H(\omega) = \frac{2000}{201\cdot10^3 + 109 10j\omega - 0.132\omega} $$

I have trouble calculating the argument.

Is it $$ \lvert H \rvert = arg \left( \frac{2000}{201\cdot10^3 + 109 10j\omega - 0.132\omega} \right)\\\lvert H \rvert= arg(2000) - arg(201\cdot10^3 + 109 10j\omega - 0.132\omega)\\\lvert H \rvert= arctan(2000) - arctan(201\cdot10^3 + 109 10j\omega - 0.132\omega)$$

If so, how can I reduce it so I can plot it in python?