TypeError: integer argument expected, got float

[Roberto]

Thanks in advance...
I installed libsuinput-0.4, python-uinput-0.5, pytuio-0.1 and I tried tuiototouch.py in ubuntu 11.04.
Is there something wrong in __init__.py ?

sudo python tuiototouch.py

type :1 code : 330 value : 0
type :1 code : 330 value : 1
type :3 code :0 value :895
Traceback (most recent call last):
  File "tuiototouch.py", line 121, in <module>
    device.display()
  File "tuiototouch.py", line 92, in display
    self.device.emit(uinput.EV_ABS, uinput.ABS_X, self.x_mouse, syn=False)
  File "/usr/local/lib/python2.7/dist-packages/uinput/__init__.py", line 174, in emit
    suinput.uinput_write(self.__uinput_fd, ev_type, ev_code, ev_value)
TypeError: integer argument expected, got float

[a (tuomasjjrasanen)]

Hi and thank you for reporting this!

It seems that your tuiototouch.py on line 92 is passing a float argument (self.x_mouse). Uinput expects only integers.

I think that the int-conversion could be done under the hood in suinput. So perhaps suinput should make sure that ev_value is integer before it passes it to the uinput-system.

So there are two possible solutions. I could either

  - document the integer requirement for uinput.Device.emit()

or

 - allow any numerical type and typecast it to integer in suinput

I'm not sure right away which is better, I'll think about it for a while.

Meanwhile, I think you can fix this by typecasting self.x_mouse to int in tuiototouch.py: int(self.x_mouse).

[Linus Seelinger (s-linus)]

self.x_mouse is not the only place where there needs to be a typecast. after adding these typecasts, it works well.

Yet, there is another problem on ubuntu 11.04:

Traceback (most recent call last):
  File "/home/gabriel/Arbeitsfläche/tuiototouchbridge/tuiototouch.py", line 110, in <module>
    tracking=tuio.Tracking()
  File "/usr/local/lib/python2.7/dist-packages/tuio/__init__.py", line 29, in __init__
    self.open_socket()
  File "/usr/local/lib/python2.7/dist-packages/tuio/__init__.py", line 39, in open_socket
    self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
AttributeError: 'module' object has no attribute 'SO_REUSEPORT'

By replacing 'SO_REUSEPORT' by 'SO_REUSEADDR', I could make it work.

[Dave Gordon (python-bugz)]

Probably down to a change in Python 2.7. Up until 2.6, if you passed a float to a function that was defined as taking an int, the float would automatically be converted, though possibly with a DeprecationWarnng. In 2.7 (and Python 3000) it's now a TypeError. So, you have to put in an explicit conversion to int wherever this occurs.

There are quite a lot of packages affected by this!

Dave

[a (tuomasjjrasanen)]

It's an error to pass a float value as event descriptor. Therefore I'm marking this bug as invalid. Python-uinput should not make an implicit type cast to hide type errors in the application logic.