• Pip version: development version
• Python version: 3.5
• Operating System: Fedora 24

Description:

"pip install PrettyTable" logs a PendingDeprecationWarning because platform.linux_distribution() has been deprecated in Python 3.5:

.../pip/download.py:93: PendingDeprecationWarning: dist() and linux_distribution() functions are deprecated in Python 3.5
  zip(["name", "version", "id"], platform.linux_distribution()),

I suggest to replace the function with the distro module:

• https://pypi.python.org/pypi/distro
• https://github.com/nir0s/distro

FYI platform.linux_distribution() and platform.dist() have been deprecated by https://bugs.python.org/issue1322