Windows support

[Bstylestuff]

When I attempt to run it in windows, I get an error:

File "E:/Chess/Software/testing.py", line 4, in <module>
    engine = chess.engine.SimpleEngine.popen_uci("stockfish")
  File "E:\Chess\Software\chess\engine.py", line 2249, in popen_uci
    return cls.popen(UciProtocol, command, timeout=timeout, debug=debug, setpgrp=setpgrp, **popen_args)
  File "E:\Chess\Software\chess\engine.py", line 2241, in popen
    return run_in_background(background, debug=debug)
  File "E:\Chess\Software\chess\engine.py", line 193, in run_in_background
    return future.result()
  File "D:\Users\<USER>\Anaconda3\lib\concurrent\futures\_base.py", line 432, in result
    return self.__get_result()
  File "D:\Users\<USER>\Anaconda3\lib\concurrent\futures\_base.py", line 384, in __get_result
    raise self._exception
  File "E:\Chess\Software\chess\engine.py", line 172, in background
    loop.run_until_complete(coroutine(future))
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\base_events.py", line 484, in run_until_complete
    return future.result()
  File "E:\Chess\<USER>\chess\engine.py", line 2233, in background
    transport, protocol = yield from asyncio.wait_for(Protocol.popen(command, setpgrp=setpgrp, **popen_args), timeout)
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\tasks.py", line 358, in wait_for
    return fut.result()
  File "E:\Chess\Software\chess\engine.py", line 803, in popen
    transport, protocol = yield from loop.subprocess_exec(cls, *command, **popen_args)
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\base_events.py", line 1211, in subprocess_exec
    bufsize, **kwargs)
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\windows_events.py", line 378, in _make_subprocess_transport
    **kwargs)
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\base_subprocess.py", line 39, in __init__
    stderr=stderr, bufsize=bufsize, **kwargs)
  File "D:\Users<USER>\Anaconda3\lib\asyncio\windows_events.py", line 762, in _start
    bufsize=bufsize, **kwargs)
  File "D:\Users\<USER>\Anaconda3\lib\asyncio\windows_utils.py", line 205, in __init__
    stderr=stderr_wfd, **kwds)
  File "D:\Users\<USER>\Anaconda3\lib\subprocess.py", line 729, in __init__
    restore_signals, start_new_session)
  File "D:\Users\<USER>\Anaconda3\lib\subprocess.py", line 1017, in _execute_child
    startupinfo)

Any suggestions?

[niklasf]

Hi, thanks for reporting. It looks like some output is missing at the start of the stacktrace (in particular the message and type of the exception). Can you please check and include that?

Edit: Also a guess: If this is a FileNotFoundError, is stockfish.exe in your system PATH or in the working directory?

[Bstylestuff]

Here is the stacktrace:

Traceback (most recent call last):  File "E:/Chess/Software/testing.py", line 4, in <module>    engine = chess.engine.SimpleEngine.popen_uci("stockfish")  File "E:\Chess\Software\chess\engine.py", line 2227, in popen_uci    return cls.popen(UciProtocol, command, timeout=timeout, debug=debug, setpgrp=setpgrp, **popen_args)  File "E:\Chess\Software\chess\engine.py", line 2219, in popen    return run_in_background(background, debug=debug)  File "E:\Chess\Software\chess\engine.py", line 193, in run_in_background    return future.result()  File "D:\Users\TekAdvice\Anaconda3\lib\concurrent\futures\_base.py", line 432, in result    return self.__get_result()  File "D:\Users\TekAdvice\Anaconda3\lib\concurrent\futures\_base.py", line 384, in __get_result    raise self._exception  File "E:\Chess\Software\chess\engine.py", line 172, in background    loop.run_until_complete(coroutine(future))  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\base_events.py", line 484, in run_until_complete    return future.result()  File "E:\Chess\Software\chess\engine.py", line 2211, in background    transport, protocol = yield from asyncio.wait_for(Protocol.popen(command, setpgrp=setpgrp, **popen_args), timeout)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\tasks.py", line 358, in wait_for    return fut.result()  File "E:\Chess\Software\chess\engine.py", line 803, in popen    transport, protocol = yield from loop.subprocess_exec(cls, *command, **popen_args)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\base_events.py", line 1211, in subprocess_exec    bufsize, **kwargs)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\windows_events.py", line 378, in _make_subprocess_transport    **kwargs)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\base_subprocess.py", line 39, in __init__    stderr=stderr, bufsize=bufsize, **kwargs)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\windows_events.py", line 762, in _start    bufsize=bufsize, **kwargs)  File "D:\Users\TekAdvice\Anaconda3\lib\asyncio\windows_utils.py", line 205, in __init__    stderr=stderr_wfd, **kwds)  File "D:\Users\TekAdvice\Anaconda3\lib\subprocess.py", line 729, in __init__    restore_signals, start_new_session)  File "D:\Users\TekAdvice\Anaconda3\lib\subprocess.py", line 1017, in _execute_child    startupinfo)FileNotFoundError: [WinError 2] The system cannot find the file specified

And this is what testing.py is:

import chess
import chess.engine

engine = chess.engine.SimpleEngine.popen_uci("stockfish")

board = chess.Board("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR")
while not board.is_game_over():
    result = engine.play(board, chess.engine.Limit(time=0.100))
    board.push(result.move)

engine.quit()

On Saturday, January 19, 2019, 4:04:37 PM GMT+2, Niklas Fiekas <notifications@github.com> wrote:  

Hi, thanks for reporting. It looks like some output is missing at the start of the stacktrace. Can you please check and include that?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[niklasf]

FileNotFoundError: [WinError 2] The system cannot find the file specified would indicate that stockfish is not in your system PATH or in the working directory. Maybe try specifying the absolute path to stockfish.exe?

[Bstylestuff]

I tried to send it to the stockfish.py file in both the file I sent you earlier and in the engine's uci.py. I tried both with and without the ".py" extension. Same issue On Saturday, January 19, 2019, 5:22:24 PM GMT+2, Niklas Fiekas notifications@github.com wrote:

FileNotFoundError: [WinError 2] The system cannot find the file specified would indicate that stockfish is not in your system PATH or in the working directory. Maybe try specifying the absolute path to stockfish.exe?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[niklasf]

Sorry, maybe we're talking past each other. This will try to open stockfish.exe from the system PATH (or maybe from the current working directory - not sure if that's included on Windows).

engine = chess.engine.SimpleEngine.popen_uci("stockfish.exe") # appended .exe for clarity

You can also try an absolute or relative path:

engine = chess.engine.SimpleEngine.popen_uci(r"C:\path\to\stockfish.exe")

You can also try running stockfish on the Windows Command Prompt to test things.

I tried both with and without the ".py" extension.

I am confused. Is the executable called stockfish.py? Are you trying to use this?

[Bstylestuff]

Originally I tried the python, but then got the windows executable from their website, it works. Still can't launch due to pipe errors, but will look into it later. Thank you!

Sent from Yahoo Mail on Android

On Sat, 19 Jan 2019 at 17:44, Niklas Fiekasnotifications@github.com wrote:
Sorry, maybe we're talking past each other. This will try to open stockfish.exe from the system PATH (or maybe from the current working directory - not sure if that's included on Windows). engine = chess.engine.SimpleEngine.popen_uci("stockfish.exe") # appended .exe for clarity

You can also try an absolute or relative path: engine = chess.engine.SimpleEngine.popen_uci(r"C:\path\to\stockfish.exe")

You can also try running stockfish on the Windows Command Prompt to test things.

I tried both with and without the ".py" extension.

I am confused. Is the executable called stockfish.py? Are you trying to use this?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[niklasf]

Cool, sounds like progress :)

For BrokenPipeError it could be helpful to check if the engine sent anything before it died (https://python-chess.readthedocs.io/en/latest/engine.html#logging).

[soonrobert]

The engine after my understanding was unable to send anything before it died.

Exception in callback EngineProtocol.pipe_data_received(1, b'id name Sto...\r\nuciok\r\n')
handle: <Handle EngineProtocol.pipe_data_received(1, b'id name Sto...\r\nuciok\r\n')>
Traceback (most recent call last):
  File "E:\Univ\Python\lib\asyncio\events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 607, in pipe_data_received
    self._line_received(line)
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 620, in _line_received
    self.command._line_received(self, line)
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 872, in _line_received
    self.line_received(engine, line)
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 917, in line_received
    self._option(engine, line.split(" ", 1)[1])
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 979, in _option
    option = Option(name, type, without_default.parse(default), min, max, var)
  File "E:\Univ\Python\lib\site-packages\chess\engine.py", line 233, in parse
    raise EngineError("invalid line-break in string option {!r}".format(self.name))
chess.engine.EngineError: invalid line-break in string option 'Debug Log File'

The input it gets from the stockfish ai through the pipe is:

Stockfish 8 64 by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

id name Stockfish 8 64
id author T. Romstad, M. Costalba, J. Kiiski, G. Linscott

option name Debug Log File type string default 

As you can see it's Stockfish 8, I tried using another version, thought the bug might be because of deprecation of some sort. It gives the same output with Stockfish 10 too I think that the error here is that it cannot parse the Debug Log File name because it finds an \r inside of it. Any hints on how this worked before?

[niklasf]

Thanks, that helped a lot. The new chess.engine simply did not properly handle Windows-style line endings. Added an automated test to prevent this in the future and released a fixed v0.25.1.

[soonrobert]

It works like a charm. Thanks!