subprocess - Execute files in windows with Python -

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this question has answer here:

i want make python program execute file in windows. means if try execute .txt file, open default .txt viewer. possible?

i tried subprocess.call, windowserror: [error 193] %1 not valid win32 application. file i'm trying run .png file.

os.startfile("mytext.txt") #open text editor os.startfile("mytext.pdf") #open in pdf viewer os.startfile("mytext.html") #open in webbrowser

is how should

however

os.startfile("my_prog.py")

is bad idea because there no way know if python set default open *.py or if texteditor or ide set default open *.py


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