How does Python evaluate the following expression? anim1
gets executed after anim2
. How does a simple + operator that?
anim1 = Animation(duration=1, center=(100,100) type='delta')
anim2 = Animation(duration=1, rotation=45 type='delta')
anim = anim1 + anim2
This will call anim1.__add__(anim2)
.
In order to understand what is happening under the hood you have to inspect the definition of __add__
method from Animation class.
In Python, you can redefine the behavior of the mathematical operators. If I understood your question, Animation probably redefines the "+" operator using the __add__
method.
More info: Official Documentation
Check out the dis
module . It has a function dis
that will take a function/module/class and show you the byte code.
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