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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Success with subprocess communicate on Windows?
Date: Wed, 02 Jul 2014 19:14:13 -0400
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On 7/2/2014 1:37 PM, Wolfgang Maier wrote:
> On 02.07.2014 19:31, Wolfgang Maier wrote:
>>
>> I am not 100% sure whether that is the problem, but from what I gather=

>> from the subprocess module docs the args string is passed to the Windo=
ws
>> CreateProcess function as a single string.
>> To me this seems to imply that it is passed as the lpCommandLine
>> parameter (with Null for the lpApplicationName parameter).
>> This is what Microsoft says about this case
>> (http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=3D=
vs.85%29.aspx):
>>
>>
>>
>> <quote>
>> If lpApplicationName is NULL, the first white space=E2=80=93delimited =
token of
>> the command line specifies the module name. If you are using a long fi=
le
>> name that contains a space, use quoted strings to indicate where the
>> file name ends and the arguments begin (see the explanation for the
>> lpApplicationName parameter). If the file name does not contain an
>> extension, .exe is appended. Therefore, if the file name extension is
>> .com, this parameter must include the .com extension. If the file name=

>> ends in a period (.) with no extension, or if the file name contains a=

>> path, .exe is not appended. If the file name does not contain a
>> directory path, the system searches for the executable file in the
>> following sequence.
>> </quote>
>>
>> So in your case the default behavior would be to add an .exe extension=

>> to pyflakes, which is probably not what you intended ?
>>
>> Best,
>> Wolfgang
>>
>
> Ah, I forgot about your pyflakes -h example, which works, so my
> explanation must be wrong.

I appreciate the attempt. I hope there is someone who has been=20
successful who can answer ;-).

--=20
Terry Jan Reedy