Error in Importing a bash script into a python

Question

I am trying to create a python script script.py in bash and importing a bash script.

#!/usr/bin/env python    
import os
import glob
from fnmatch import fnmatch
# importing a software
python_package = os.system("""#!/path_to_bin/bin/python 
from __future__ import print_function, division 
from python_toolbox.toolbox.some_toolbox import run 
if __name__ == '__main__': 
    run()"""

# testing 
greeting = "Hello world!"
print(greeting)

Running the script.py in python3

$python3 script.py
  File "script.py", line 15
    greeting = "Hello world!"
SyntaxError: invalid syntax

Asked By: Sher

||

Source

Answer 1

Nominally the problem is that you are missing the closing paren on the os.system call. But there is a better way to run a python program than trying to write it all on the command line. Instead, you can pass a full script, including newlines, to python’s stdin.

#!/usr/bin/env python    
import sys
import subprocess as subp

# importing a software
def run_script():
    subp.run([sys.executable, "-"], input=b"""
print("I am a called python script")
""")

# testing
run_script() 
greeting = "Hello world!"
print(greeting)

In this script, the second python script is run whenever you call run_script. Notice that the script in the string has to follow the normal python indendation rules. So, there is indentation inside run_script but then the string holding the second script starts its indentation all the way to the left again.

Answered By: tdelaney

Error in Importing a bash script into a python

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