Embed bash in python

Question

I am writting a Python script and I am running out of time. I need to do some things that I know pretty well in bash, so I just wonder how can I embed some bash lines into a

Answer 1

Is

import os
os.system ("bash -c 'echo $0'")

going to do it for you?

EDIT: regarding readability

Yes, of course, you can have it more readable

import os
script = """
echo $0
ls -l
echo done
"""
os.system("bash -c '%s'" % script)

EDIT2: regarding macros, no python does not go so far as far as i know, but between

import os
def sh(script):
    os.system("bash -c '%s'" % script)

sh("echo $0")
sh("ls -l")
sh("echo done")

and previous example, you basically get what you want (but you have to allow for a bit of dialectical limitations)