Capture variables

It's possible to use python variables directly in shell scripts. An example:

import json
import os
import tempfile

# get the api answer with curl
answer = `curl https://api.github.com/users/python

answer_json = json.loads(answer.stdout)
avatar_url = answer_json['avatar_url']

destination = os.path.join(tempfile.gettempdir(), 'python.png')

# execute curl once again, this time to get the image
result = `curl {avatar_url} > {destination}
p`ls -l {destination}

You can see that avatar_url and destination are python variables, but can be accessed from the shell script. The __str__() method of variable will be used for the variable representation in shell.