Generate an output file with python inside a php script

I need help in figuring out on how to generate an output file in python inside php script.

So here is the problem: I have a php script that lets user upload files. Those files are stored in the server. After that those files will be run on a python script, and will generate output files. After that the php script will get those output files, and send an email to the user. I want to make it automatically send to the user after they upload and click the submit button.

I have all those done, until trying to call a python script inside the php script The python script inside the php script does not execute the function where it generates the output files.

This is the function that I use for calling the bash script:

system('bash /data/home/rxs061/public_html/test.sh');

I also have used the function exec(); and shell_exec(); But does not work. The problem here, the function does not run on the command line, so the output file won't be generated.

This is inside the bash script (test.sh): python /home/rxs061/public_html/test.py outfile=$PWD/test.out echo "$PWD/"

The problem here it does not want to generate "test.out"

This is inside the the python script (test.py): import sys outfile = open('test.out', 'w') outfile.write('it worked\n') outfile.close()

This does not have to do with permissions. How do you put this all together in a single php script? Or are there any other solutions? Or how to make it output files???