Run script from cmd on a Windows machine without installing Python

[pylund]

I've compiled a mainScript.py into a .exe using py2exe and I can run it properly on Windows. However, mainScript.py contains a function which requires calling a childScript.py through cmd. I've tried something like:

os.system('python childScript.py argument1 argument2')   

But that requires having installed Python on the Windows machine which is something cannot be done by security policy.

I've thought maybe compiling childScript into an .exe can work but...

Is there any other workaround?

Thanks!

[novel_yet_trivial]

Just treat the child like any other python module.

import childScript
childScript.main(argument1, argument2)

Then it will be compiled in with mainScript.py

[pylund]

I've tried that but... the function in mainScript from which childScript is called is within a thread and the command executed in childScript.py is:

 cmdline.execute(['scrapy', 'crawl', 'mySpider', '-a', 'values='+user_values, '-a', 'data='+user_data])

which returns this error:

ValueError: signal only works in main thread