ceil method

Question

What is the difference between math.ceil(x) and x.__ceil__()?

Answer 1

It's almost the same.
The only difference is that you can redefine the function with magic method (__ceil__()).
I think there's no point in redefining math.ceil() so don't use __ceil__().
https://code.sololearn.com/ch7rUkvBxKG6/?ref=app
edit:
In Python float is primitive type, not a class.
You can't redifine math.ceil(float).
My example is creating a new float-like object, not changing the function with a float parameter.