Argument Error when use eliot tree

[RyuAsuka]

Test code:

from eliot import log_call, to_file

to_file(open('log.log', 'w'))

@log_call(action_type='CALC', include_args=['x'], include_result=True)
def calculate(x, y):
    return x * y

x = 2
y = 10
result = calculate(x, y)
print(result)

Then use eliot-tree log.log it returns an Argument Error.

Exceptions (1) occurred during processing:
Traceback (most recent call last):
  File "C:\Users\paule\Anaconda3\lib\site-packages\toolz\functoolz.py", line 781, in __call__
    return self.func(*args, **kwargs)
  File "C:\Users\paule\Anaconda3\lib\site-packages\eliottree\_render.py", line 117, in format_node
    format.escape_control_characters(node.root().task_uuid)))
  File "C:\Users\paule\Anaconda3\lib\site-packages\eliottree\_color.py", line 43, in __color
    return colored(text, fg, bg, attrs=attrs)
  File "C:\Users\paule\Anaconda3\lib\site-packages\eliottree\_color.py", line 30, in colored
    _colored.fg(fg) if fg is not None else u'',
  File "C:\Users\paule\Anaconda3\lib\site-packages\colored\colored.py", line 402, in fg
    return colored(color).foreground()
  File "C:\Users\paule\Anaconda3\lib\site-packages\colored\colored.py", line 22, in __init__
    self.enable_windows_terminal_mode()
  File "C:\Users\paule\Anaconda3\lib\site-packages\colored\colored.py", line 373, in enable_windows_terminal_mode
    hStdout = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
ctypes.ArgumentError: argument 1: <class 'TypeError'>: wrong type

[jonathanj]

@RyuAsuka It looks this is an issue with the colored library that eliot-tree is using. Can you try eliot-tree --color never log.log to see if disabling color helps?

[jonathanj]

@RyuAsuka Can you also provide information about what version of Windows and Python you're using? There is a Windows builder in CI that isn't failing (to my knowledge) so there must be something peculiar about your setup.

[RyuAsuka]

@jonathanj I have tried eliot-tree --color never log.log and the exceptions do not appear again.

My OS is Windows 10 1909 v18363.900, Python version is 3.7.7 with anaconda 4.8.3. I simply use anaconda to install eliot-tree by conda install -c conda-forge eliot eliot-tree

The test program and eliot-tree command works normally in Ubuntu 18.04.