Sample with Jinja simple, returning json, calling system commands

jinja_and_os.py

import json
from jinja2 import Template
import glob, os
from subprocess import call


def listProviders():
	path = 'providers'
	plugins = glob.glob(os.path.join(path, '*'))
	p = dict()
	l= list()
	for plugin in plugins:
		if plugin != None:
			l.append(plugin.replace('providers/', ''))
	p['providers'] = l
	return(json.dumps(p))


def downloadSampleConfig(arg):
	file = open('config.sample', 'r')
	return (file.read())

def start():
	file = open('start.model', 'r')
	return (file.read())

def install():
	call(["terraform", "plan"])



def validateConfigAndInstall(arg):
	json1_file = open('config.sample', 'r')
	json1_str = json1_file.read()
	configs = json.loads(json1_str)
	print(configs['provider'])
	os.chdir('providers/' + configs['provider'])
	for file in glob.glob("*"):
		print(file)
		contents = open(file, 'r').read()
		template = Template(contents)
		print(template.render(configs))
		target = open('../../cluster/' + file, 'w+')
		target.write(template.render(configs))

	os.chdir('../../cluster')
	install()