Running a process in pythonw with Popen without a console

问题

I have a program with a GUI that runs an external program through a Popen call:

p = subprocess.Popen(\"<commands>\" , stdout=subprocess.PIPE , stderr=subprocess.PIPE , cwd=os.getcwd())
p.communicate()

But a console pops up, regardless of what I do (I\'ve also tried passing it NUL for the file handle). Is there any way to do that without getting the binary I call to free its console?

回答1:

From here:

import subprocess

def launchWithoutConsole(command, args):
    """Launches 'command' windowless and waits until finished"""
    startupinfo = subprocess.STARTUPINFO()
    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
    return subprocess.Popen([command] + args, startupinfo=startupinfo).wait()

if __name__ == "__main__":
    # test with "pythonw.exe"
    launchWithoutConsole("d:\\bin\\gzip.exe", ["-d", "myfile.gz"])

Note that sometimes suppressing the console makes subprocess calls fail with "Error 6: invalid handle". A quick fix is to redirect stdin, as explained here: Python running as Windows Service: OSError: [WinError 6] The handle is invalid

回答2:

This works nicely in the win32api. The other solutions were not working for me.

import win32api
chrome = "\"C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe\""
args = "https://stackoverflow.com"

win32api.WinExec(chrome + " " + args)

回答3:

just do subprocess.Popen([command], shell=True)

回答4:

You might be able to just do subprocess.Popen([command], shell=False).

That's what I use anyways. Saves you all the nonsense of setting flags and whatnot. Once named as a .pyw or run with pythonw it shouldn't open a console.

回答5:

According to Python 2.7 documentation and Python 3.7 documentation, you can influence how Popen creates the process by setting creationflags. In particular, the CREATE_NO_WINDOW flag would be useful to you.

variable = subprocess.Popen(
   "CMD COMMAND", 
   stdout = subprocess.PIPE, creationflags = subprocess.CREATE_NO_WINDOW
)

来源：https://stackoverflow.com/questions/1813872/running-a-process-in-pythonw-with-popen-without-a-console

标签

python

user-interface

console

popen

pythonw