python 在没有控制台的情况下使用 Popen 在 pythonw 中运行进程
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Running a process in pythonw with Popen without a console
提问by sbirch
I have a program with a GUI that runs an external program through a Popen call:
我有一个带有 GUI 的程序，它通过 Popen 调用运行外部程序：
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?
但是无论我做什么，都会弹出一个控制台（我也试过为文件句柄传递 NUL）。有没有办法在不获取我调用以释放其控制台的二进制文件的情况下做到这一点？
回答by interjay
From here:
从这里：
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
请注意，有时抑制控制台会使子进程调用失败并显示“错误 6：句柄无效”。快速解决方法是重定向stdin，如下所述：Python running as Windows Service: OSError: [WinError 6] The handle is invalid
回答by Liam
just do subprocess.Popen([command], shell=True)
做就是了 subprocess.Popen([command], shell=True)
回答by Devon Dieffenbach
This works nicely in the win32api. The other solutions were not working for me.
这在 win32api 中运行良好。其他解决方案对我不起作用。
import win32api
chrome = "\"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe\""
args = "https://stackoverflow.com"
win32api.WinExec(chrome + " " + args)
回答by ErnestoQ
According to Python 2.7 documentationand Python 3.7 documentation, you can influence how Popencreates the process by setting creationflags. In particular, the CREATE_NO_WINDOWflag would be useful to you.
根据Python 2.7 文档和Python 3.7 文档，您可以Popen通过设置creationflags. 特别是，该CREATE_NO_WINDOW标志对您很有用。
variable = subprocess.Popen(
"CMD COMMAND",
stdout = subprocess.PIPE, creationflags = subprocess.CREATE_NO_WINDOW
)
回答by ThantiK
You might be able to just do subprocess.Popen([command], shell=False).
你也许能够做到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.
反正我就是这么用的。为您省去设置标志之类的所有废话。一旦命名为 .pyw 或使用 pythonw 运行，它就不应该打开控制台。
