CODEWITHSUNDEEP
pythonmacossubprocess
swdev
swdev

Reputation: 5157

After turning into OSX app, Python subprocess can't call external console command

I am developing a GUI application using Kivy that in turn it will call an external console program from Python script using subprocess.Popen and capture its stderr output live. Finally, it works (thanks to SO for this!). I package the application using Pyinstaller, in which it produce an *.app that contains the executable resided in Contents\MacOS. If I run this executable directly from within Terminal, it runs well. The stderr output can be capture live. But, if I try to run the *.app directly either using open command from Terminal or double click its *.app icon from Finder, the call to subprocess.Popen simply halt.

I am not sure about this, but is there any restriction on an OSX app about how it can execute external program?

Upvotes: 0

Views: 860

Answers (1)

swdev
swdev

Reputation: 5157

The cause of the application halt turns out to be not the subprocess.Popen call, but the call of mktemp that creates a temporary file inside of *.app folder, where a Mac app is definitely not permitted to write by default. After commenting this out, the code runs just fine. I'll make note of this and remind myself not to create temp file inside *.app folder again!

Upvotes: 1

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