How to pass python commands after opening a python console from a python script?

Question

What I need here is opening a python console from python script and then pass commands to that python console.

I need to automate this process. Currntly I am using os.system and subprocess to open the python console but after that I am totally stuck with passing print("Test") to python console.

Here is the sample code which I am working on.

import os
os.system("python")
#os.system("print('Hello World'))

# or 

import subprocess
subprocess.run("python", shell = True)

Please help me to understand how I can pass the nested commands. Thanks

Answer 1

I have found a very helpful answer from another thread and applied to my use case.

from subprocess import run, PIPE

p = run(['python'], stdout=PIPE,
        input='print("Test")\nprint("Test1")\nimport os\nprint(os.getcwd())', encoding='ascii')
print(p.returncode)
# -> 0
print(p.stdout)

It starts the python shell and then executes the following commands separated by \n.

1. Prints Test
2. Prints Test1
3. Imports OS
4. Get the current working directory.

Reference : How do I pass a string into subprocess.Popen (using the stdin argument)?