Upgrades all pip packages

upgrade_all.pip.py

import subprocess
import json

CMD_LIST = 'pip list --outdated --format json'
CMD_UPDATE = 'pip install --upgrade {}'

result = subprocess.run(CMD_LIST.split(),stdout=subprocess.PIPE)

packages = json.loads(result.stdout)

for package in packages:
    name = package['name']
    print('Upgrading {}'.format(name))
    cp = subprocess.run(CMD_UPDATE.format(name).split())
    if cp.returncode != 0:
        print('Possible failure of package upgrade {}\n{}'.format(name,cp.stderr))