On 08Feb2017 18:56, Andreas Paeffgen <oege...@gmail.com> wrote:
The Problem with the subprocess code is: Using the sourcecode
functioning as normal.
The frozen app with cx_freeze on every platform just returns an empty result
I don't know what the sentence above above cx_freeze means.
Here is the code in short:
def get_path_pandoc():
settings = QSettings('Pandoc', 'PanConvert')
path_pandoc = settings.value('path_pandoc','')
if not os.path.isfile(path_pandoc):
if platform.system() == 'Darwin' or os.name == 'posix':
args = ['which', 'pandoc']
p = subprocess.Popen(
args,
stdin=subprocess.PIPE,
"which" doesn't read any input. You probably want "subprocess.DEVNULL" instead
of "subprocess.PIPE" for stdin.
stdout=subprocess.PIPE)
path_pandoc =
str.rstrip(p.communicate(path_pandoc.encode('utf-8'))[0].decode('utf-8'))
The whole problematic code can be checked on
http://github.com/apaeffgen/panconvert
in source/converters/interface_pandoc.py
I debugged it with some QMessage-Boxes. I just know, that the returnd
result is empty.
I tried some stderr on this code also. But also the error message is empty.
What does "which pandoc" say to you at a terminal prompt? The code above relies
on that returning you the path to the pandoc executable. If it is not in your
path then you will get an empty result.
Also, the "which" programme should have a zero exit status if it finds and
prints the path to pandoc, and a nonzero exit status otherwise? Find out what
exit status it returns. This is available from the "p" object after
communicate() returns. See the subprocess doco for details. The easy thing to
do is probably to call "p.check_returncode()" after communicate() returns.
Any hints what could be changed in the code, so it also works in the
frozen app?
What's a frozen app?
Maybe that is your problem: when you run the programme by hand it works, but in
this "forzen" state it doesn't.
The "which" command isn't magic. It searchs for commands by looking for
executables in the directories listed in the $PATH environment variable. Get
your program to print or display the value of "os.environ['PATH']" before
invoking "which". The difference may tell you something useful.
At the moment i use python3.4 to 3.5 depending on the platform (Mac,
Win, Linux)
Thank you for this information; many people forget to supply it.
P.S. Tried also some code with invoking the bash and afterwords the which
pandoc code. To know avail also
From a shell prompt (such as bash's prompt) issuing the command:
which pandoc
should print the executable path, _if_ your $PATH includes the right directory.
You can look at $PATH from the shell with the command:
echo $PATH
Do you know where pandoc normally resides on your system?
Cheers,
Cameron Simpson <c...@zip.com.au>
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