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zeth / inputs

Cross-platform Python support for keyboards, mice and gamepads
BSD 3-Clause "New" or "Revised" License
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Doesn't seem to work on Raspberry Pi or Windows #97

Open nerdfever opened 3 years ago

nerdfever commented 3 years ago

I tried the same code on each platform - from the examples:

from inputs import get_key

def main():
    """Just print out some event infomation when keys are pressed."""
    while 1:
        events = get_key()
        if events:
            for event in events:
                print(event.ev_type, event.code, event.state)

main()

On the Pi - Raspbian GNU/Linux 10 (buster), Python 3.7.3:

Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.7/site-packages/inputs.py", line 3658, in get_key
    keyboard = devices.keyboards[0]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pi/Desktop/minimal.py", line 14, in <module>
    main()
  File "/home/pi/Desktop/minimal.py", line 9, in main
    events = get_key()
  File "/home/pi/.local/lib/python3.7/site-packages/inputs.py", line 3660, in get_key
    raise UnpluggedError("No keyboard found.")
inputs.UnpluggedError: No keyboard found.

(FWIW, this was in a VNC session.)

On Windows 10, Python 3.8.5:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 116, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 125, in _main
    prepare(preparation_data)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 236, in prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 287, in _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "C:\Program_Files\anaconda3\lib\runpy.py", line 265, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "C:\Program_Files\anaconda3\lib\runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "C:\Program_Files\anaconda3\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\Dave\data\Code\Python\lib\minimal.py", line 14, in <module>
    main()
  File "C:\Users\Dave\data\Code\Python\lib\minimal.py", line 9, in main
    events = get_key()
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 3661, in get_key
    return keyboard.read()
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2517, in read
    return next(iter(self))
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2471, in __iter__
    event = self._do_iter()
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2495, in _do_iter
    data = self._get_data(read_size)
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2575, in _get_data
    return self._pipe.recv_bytes()
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2534, in _pipe
    self._listener.start()
  File "C:\Program_Files\anaconda3\lib\multiprocessing\process.py", line 121, in start
    self._popen = self._Popen(self)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\context.py", line 327, in _Popen
    return Popen(process_obj)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\popen_spawn_win32.py", line 45, in __init__
    prep_data = spawn.get_preparation_data(process_obj._name)
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 154, in get_preparation_data
    _check_not_importing_main()
  File "C:\Program_Files\anaconda3\lib\multiprocessing\spawn.py", line 134, in _check_not_importing_main
    raise RuntimeError('''
RuntimeError: 
        An attempt has been made to start a new process before the
        current process has finished its bootstrapping phase.

        This probably means that you are not using fork to start your
        child processes and you have forgotten to use the proper idiom
        in the main module:

            if __name__ == '__main__':
                freeze_support()
                ...

        The "freeze_support()" line can be omitted if the program
        is not going to be frozen to produce an executable.
Exception ignored in: <function InputDevice.__del__ at 0x0000016F36E2AF70>
Traceback (most recent call last):
  File "C:\Program_Files\anaconda3\lib\site-packages\inputs.py", line 2541, in __del__
  File "C:\Program_Files\anaconda3\lib\multiprocessing\process.py", line 133, in terminate
AttributeError: 'NoneType' object has no attribute 'terminate'

(FWIW, I tried in Spyder as installed by Anaconda.)