get_version.py
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	#!/usr/bin/env python2.7
	# -- coding: utf-8 --
	#get_version.py

	import os
	from subprocess import Popen, PIPE
	from json import load, dump
	from datetime import datetime

	__dir__ = os.path.dirname(__file__)

	pkg_list = []

	# Get packages hard-coded in R scripts
	sub = Popen([__dir__+'/get_version.sh'], stdout=PIPE, stderr=PIPE)
	sub.wait()
	pkg_list.extend([e for e in sub.stdout.read().split('\n') if e not in [None, '', ' ']])

	# Get packages passed in etc json
	json_fp = __dir__+'/../etc/genocrunchlib.json'
	if os.path.exists(json_fp):
	data = load(open(json_fp))

	for key, val in data['choices'].iteritems():
	pkg = [e['pkg'] for e in val if 'pkg' in e.keys() and e['pkg'] not in [None, '', ' ']]
	if len(pkg) > 0:
	pkg_list.extend(pkg)
	pkg_list = list(set(pkg_list))

	# Get version installed
	sub = Popen([__dir__+'/get_version.R', ','.join(pkg_list)], stdout=PIPE, stderr=PIPE)
	sub.wait()
	versions = sub.stdout.read()

	with open('version_'+str(datetime.now()).replace(' ', '_')+'.json', 'w') as f:
	f.write(versions)

	exit()