Running one python script from another script with command line argument having executable in it-CodePudding

I am trying to run a python script within another python script. Which will run 10 times and produce 10 outputs.

I want to run program1.py inside program2.py. Now my program1.py was initially taking a C executable inside it and it takes 1 command line argument.

The program1.py looks like below:

import os
import sys
dataset = sys.argv[1]

os.system(f"/home/Dev/c4.5 -u -f {dataset}")
os.system(f"/home/Dev/c4.5rules -u -f {dataset}")
os.system(f"/home/Dev/c4.5rules -u -f {dataset} > Temp")

f = open('Temp')
# Some code

Where c4.5 and c4.5rules are the name of the executable files. To run this I was using python3 program1.py dataset_name

Now I am trying to put this program1.py inside program2.py and I am trying this below approach:

import os
import subprocess

# Some code
for track in range(0, 10):
    with open(f'Train_{track}', 'r') as firstfile, open(f'DF_{track}.data', 'w') as secondfile:
        for line in firstfile:
            secondfile.write(line)
    os.system("/home/Dev/program1.py DF_track")
    #subprocess.Popen("/home/Dev/program1.py DF_track", shell=True)

Where I simply want to get the output of program1.py 10 times and want to use DF_track as the command line input for each output generation.

Using above approach I am getting lots of error. Please help.

Edit_1 :

Actually whenever I am trying to run, my cursor is not working, it is freezing, so unable to copy the errors.

Here are some of them :

1. attempt to perform an operation not allowed by security policy.
2. syntax error : word expected (expecting ")")

CodePudding user response：

Imagine I have 2 files, the first file is a.py and the other is b.py and I want to call the a.py from b.py.

The content of a.py is:

print('this is the a.py file')

and the content of b.py is:


import os

stream = os.popen('python3 a.py')
output = stream.read()

print(output)

Now when I call b.py from terminal I get the output I expect which is a.py print statment


user@mos ~ % python3 b.py
this is the a.py file

You can do this with subprocess too instead of os module.

Here is a nice blog I found online where I got the code from: https://janakiev.com/blog/python-shell-commands/

CodePudding user response：

See the example below.

a.py

def do_something():
  pass

b.py

from a import do_something

do_something()