Sri Sri - 2 months ago 21
Python Question

Windows can't find the file on subprocess.call()

I am getting the following error:

WindowsError: [Error 2] The system cannot find the file specified


My code is:

subprocess.call(["<<executable file found in PATH>>"])


Windows 7, 64 bit. Python 3.x latest, stable.

Any ideas?

Thanks,

Answer

I am not sure why but, on my windows machine I had to add a 'shell=True' to the call.

E.g. for dir you would type:

import subprocess
subprocess.call('dir', shell=True)

Hope this helps,

Douglas

To quote from the documentation: The only time you need to specify shell=True on Windows is when the command you wish to execute is built into the shell (e.g. dir or copy). You do not need shell=True to run a batch file or console-based executable.

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