Short-circuit Logic

[Ahmed Abdulshafy]

Hi,
I'm having a hard time wrapping my head around short-circuit logic that's used by Python, coming from a C/C++ background; so I don't understand why the following condition is written this way!>

     if not allow_zero and abs(x) < sys.float_info.epsilon:
                print("zero is not allowed")

The purpose of this snippet is to print the given line when allow_zero is False and x is 0.