upgrading packages with pip code example

Example 1: python update installed packages

py2
$ pip install pip-review

$ pip-review --local --interactive

py3
$ pip3 install pip-review

$ py -3 -m pip_review --local --interactive

Example 2: pip upgrade package

pip install Django -U

Example 3: upgrading a pip package while importing it

pip install [package_name] --upgrade