https://asciinema.org/a/enay4pbh1fl2v1mvbe4gavlwo

pypi-versions.py

#!/usr/bin/env python
 
''' Get a list of out-of-date packages from a pip requirements.txt file. '''
 
import itertools
import json
import requests
import sys
import yaml
 
 
def make_rainbow_string(input):
    # http://www.codepost.io/snippets/13
    color_template, min_color, max_color, output = "\033[{}m", 31, 37, ""
    current_color = min_color
    for index in range(0, len(input)):
        output += color_template.format(current_color) + input[index]
        if input[index] != " ":
            current_color += 1
        if current_color > max_color:
            current_color = min_color
    return output + color_template.format("05")

# TODO: Rewrite this using requirements-parser
# https://github.com/davidfischer/requirements-parser
class ProgressIndicator(object):
    chars = itertools.cycle(('|', '/', '-', '\\'))
 
    def update(self, message):
        self.clear()
        message = make_rainbow_string(message)
        sys.stderr.write('{0} {1}'.format(next(self.chars), message))
        sys.stderr.flush()
 
    def clear(self):
        # For more ANSI control characters, check out fish.ANSIControl
        sys.stderr.write("\033[0m\x1b[2K\r")
        sys.stderr.flush()

def main():
    try:
        requirements_txt = sys.argv[1]
    except IndexError:
        requirements_txt = 'requirements.txt'
 
    status = ProgressIndicator()
    packages = {}
    requirements = open(requirements_txt, 'r').read()
    for line in requirements.splitlines():
        line = line.strip()
        if not line or line.count('==') != 1 or line.startswith('#'):
            continue
 
        package, version = line.split('#')[0].split('==')
        status.update(package)
        response = requests.get('http://pypi.python.org/pypi/{0}/json'.format(package))
        try:
            data = json.loads(response.content)
        except Exception, err:
            status.update('ERROR [{0}]: {1}'.format(package, err))
            continue
        current_version = data['info']['version'].strip()
        if version != current_version:
            packages[package] = {
                'installed_version': version,
                'current_version': current_version
                }
 
    status.clear()
    print yaml.dump(packages,default_flow_style=False)
 
 
if __name__ == '__main__':
    main()