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My program in tkinter is working well when I am running it using PyCharm, when I am creating .exe file using pyinstaller,
pyinstaller -i"icon.ico" -w -F script.py
I have no errors. I am pasting script.exe in same folder as my script.py, and after running it I think in step where subprocess is, it is not answering, because I haveprint before subprocess line and its working.

Anyone know why?

This is the line with subprocess:

import subprocess
from subprocess import Popen, PIPE
 s = subprocess.Popen([EXE,files,'command'],shell=True, stdout=subprocess.PIPE)

EDIT:

same problem with:

s = subprocess.check_output([EXE,files,'command'],shell=True, stderr=subprocess.STDOUT)
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2
  • 2
    Using subprocess.Popen() within a pyinstaller-generated binary requires some modifications. Check this recipe both as an example and an explanation of what's going on. Commented May 22, 2018 at 8:41
  • @zwer thanks, but when i am using close_fds=True i am receiving this error: raise ValueError("close_fds is not supported on Windows " ValueError: close_fds is not supported on Windows platforms if you redirect stdin/stdout/stderr Commented May 22, 2018 at 9:23

5 Answers 5

Reset to default
14

You can compile your code in -w mode or --windowed, but then you have to assign stdin and stderr as well.

So change:

s = subprocess.Popen([EXE,files,'command'],shell=True, stdout=subprocess.PIPE)

to:

s = subprocess.Popen([EXE,files,'command'],shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
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2 Comments

@DaanWittenburg I tried this with the "systeminfo" command, button my python program will just freeze. Any idea why this is? This only happens when I use the --noconsole command. Without it, it runs fine. I also see a popup, but it doesn't really do anything. It closes after a while, but nothing gets written to my file.
This answer worked for me, even if using the -w or --noconsole options.
3

Use this function to get the command's output instead. Works with -F and -w option:

import subprocess
def popen(cmd: str) -> str:
    """For pyinstaller -w"""
    startupinfo = subprocess.STARTUPINFO()
    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
    process = subprocess.Popen(cmd,startupinfo=startupinfo, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
    return decode_utf8_fixed(process.stdout.read())
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1 Comment

I didn’t know that :o On Linux, one must use the equivalent module „fctnl“... I‘m pretty sure that can do what startupinfo can do on windows. And there are much mode threads regarding flags with fctnl :)
2

Problem was solved by not using -w command for generating exe file from .py script.

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0

I was getting the error [WinError 6] The handle is invalid when running the line

data = subprocess.check_output(['netsh', 'wlan', 'show', 'profiles']).decode('utf-8').split('\n')

This solved it for me: https://stackoverflow.com/a/43606682/12668094

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0

After tinkering with some of the solutions from this and other threads, found another option, Windows-specific, but works with or without pyinstaller (windowed or console):

  • if you don't care about capturing the output of the process and want to run it in a separate console window, allowing the user to interact with it, and wait until it finishes, you can do this:

      import subprocess
  def popen(cmd):
      args = {'stdin' : subprocess.PIPE,
              'stderr': subprocess.PIPE,
              'stdout': subprocess.PIPE,
              'env'   : os.environ}
      process = subprocess.Popen(['start','cmd','/C'] + cmd, close_fds=True, shell=True, **args)
      return process

  def run_subproc(args):
      '''helper method to run a subprocess in a separate console window'''
      p = popen(args)
      output, err = p.communicate() # <- this is the key line to wait for process completion
      status = p.wait()             # <- doesn't actually wait if 'start' used

  if __name__=='__main__':
      run_subproc(['program.exe','arg1','arg2'])
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