Python equivalence to inline functions or macros

Question

I just realized that doing

x.real*x.real+x.imag*x.imag

is three times faster than doing

abs(x)**2

where x

Answer 1

You can try to use lambda:

abs2 = lambda x : x.real*x.real+x.imag*x.imag

then call it by:

y = abs2(x)