Question about types and py2 to py3 diffrences

[wavic]

You can say:

if speed:
      speed = self.data.speed

None, an empty list, tuple, dict, set, string, etc., zero ( 0 ) and False are evaluated to False.

>>> for element in [None, [], {}, "", tuple(), set(), 0, False]:
...     print(bool(element))
... 
False
False
False
False
False
False
False
False