How to convert some code Python2 to Python3.x?

Question

I'm working with animation in my game, but I've got an error.. Can you help me pls?)

Or do I need to add all of my code?

class Animation:
    def __init__(self, x, y, sprites=None, time=100):
        self.x = x
        self.y = y
        self.sprites = sprites
        self.time = time
        self.work_time = 0
        self.skip_frame = 0
        self.frame = 0

    def update(self, dt):
        self.work_time += dt
        self.skip_frame = self.work_time // self.time
        if self.skip_frame > 0:
            self.work_time = self.work_time % self.time
            self.frame += self.skip_frame
            if self.frame >= len(self.sprites):
                self.frame = 0

    def get_sprite(self):
        return self.sprites[self.frame]

Traceback (most recent call last):
  File "C:\Users\Zyzz\Desktop\game\bin.py", line 210, in <module>
    target.update(dt)
  File "C:\Users\Zyzz\Desktop\game\bin.py", line 98, in update
    self.skip_frame = self.work_time // self.time
TypeError: unsupported operand type(s) for //: 'int' and 'module'

This has more to do with how you called Animation(..) constructors. — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Aug 9, 2017 at 13:26
Noo... It's how these are called. With the time parameter... — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Aug 9, 2017 at 13:37
No, you need to change how you instantiate them. What are you passing as time when you create Animation? That is the module the error is complaining about, and it would happen regardless of Python version. Of course, it may happen that because of something elsewhere in the code, Python 3 is passing a module where Python 2 was passing an int. — Paulo Almeida
– Paulo Almeida, Commented Aug 9, 2017 at 13:38

PiyusG · Accepted Answer · 2017-08-10 09:20:24Z

2

What I can see in your code it is nothing related to code in python2/python3.

Here self.time = time , time seems to be the imported module.
You are trying self.skip_frame = self.work_time // self.time where self.work_time is initialized with 0 earlier in def __init__(...)
It is trying to do operation between int(0) and a module(time) which is not acceptable.

But as per your question header if you want your code to migrate from python2.x to python3.x compatible there is a package available 2to3
You can install 2to3 using python-tools

$ 2to3 example.py
$ 2to3 -w example.py # -w for write the changes back to file

answered Aug 10, 2017 at 9:20

PiyusG

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