Answers for "open shell python"

python run shell command

import subprocess
process = subprocess.Popen(['echo', 'More output'],
                     stdout=subprocess.PIPE, 
                     stderr=subprocess.PIPE)
stdout, stderr = process.communicate()
stdout, stderr

command for python shell

write python and press enter in terminal. 

A Python Prompt comprising of three greater-than symbols >>> appears.

python run shell command

# First, install python or python3...
sudo apt-get install python 
#or 
sudo apt-get install python3

# Then, run your python file...
python /path-to-file/pyfile.py #or
python3 /path-to-file/pyfile.py
#Example
python /home/person/randomfile.py #or
python3 /home/person/randomfile.py

# Hope this helped :)