Python modules to use in 2016

These are from Hacker News.

• http://blog.rtwilson.com/my-top-5-new-python-modules-of-2015/
• https://marshmallow.readthedocs.org/en/latest/
• https://pypi.python.org/pypi/schema
• https://pypi.python.org/pypi/Rx/
• http://click.pocoo.org/5/
• http://matplotlib.org/users/style_sheets.html
• http://odo.readthedocs.org/en/latest/
• http://crsmithdev.com/arrow/
• http://xlsxwriter.readthedocs.org/
• https://pypi.python.org/pypi/blessings
• https://pypi.python.org/pypi/httpie
• http://scrapy.org/
• https://bitbucket.org/estin/pomp
• https://github.com/binux/pyspider
• http://pytest.org/latest/