带有--noconsole的Windows上的pyinstaller无法正常工作

Question

I have a fairly simple GUI (wxPython) app and is working great. I'm using Windows 7.
When compiling it using pyinstaller with -w (or --noconsole or --windowed ) and run it, I can see a console window for a millisecond and then it shutdown. The GUI app won't run.
Compiling without the -w will produce a working app with a console window.

What am I missing here?

Answer 1

I would guess that you are somehow launching a subprocess that gets messed up when Python runs without a console window. I have had to solve three problems related to this:

1. The multiprocessing module needs to set an environment variable when it spawns worker processes.
2. The subprocess module needs to explicitly handle stdin , stdout , and stderr , because the standard file handles aren't set for subprocesses to inherit.
3. The subprocess creates a console window, unless you tell it not to .

Answer 2

Had the same problem. Used the following function instead of subprocess.Popen() :

def popen(cmd):
    startupinfo = subprocess.STARTUPINFO()
    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
    process = subprocess.Popen(cmd, startupinfo=startupinfo, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
    return process.stdout.read()

the return type is the same as you would get from Popen().communicate()[0] :) Works great with my GUI application. Windowed with pyinstaller --noconsole...