python – OSError: [WinError 193] %1 is not a valid Win32 application

python – OSError: [WinError 193] %1 is not a valid Win32 application

The error is pretty clear. The file hello.py is not an executable file. You need to specify the executable:

subprocess.call([python.exe, hello.py, htmlfilename.htm])

Youll need python.exe to be visible on the search path, or you could pass the full path to the executable file that is running the calling script:

import sys
subprocess.call([sys.executable, hello.py, htmlfilename.htm])

Python installers usually register .py files with the system. If you run the shell explicitly, it works:

import subprocess
subprocess.call([hello.py, htmlfilename.htm], shell=True)
# --- or ----
subprocess.call(hello.py htmlfilename.htm, shell=True)

You can check your file associations on the command line with

C:>assoc .py
.py=Python.File

C:>ftype Python.File
Python.File=C:Python27python.exe %1 %*

python – OSError: [WinError 193] %1 is not a valid Win32 application

I got the same error while I forgot to use shell=True in the subprocess.call.

subprocess.call(python modify_depth_images.py, shell=True)

Running External Command

To run an external command without interacting with it, such as one
would do with os.system(), Use the call() function.

import subprocess

Simple command subprocess.call([ls, -1], shell=True)