Error updating oauth2client with pip install --upgrade

Question

I am attempting to update oauth2client by using:

pip install --upgrade oauth2client

I get the following error message:

Cannot fetch index base URL https://pypi.python.org/simple/
Could not find any downloads that satisfy the requirement oauth2client in /usr/local/lib/python2.7/dist-packages
Downloading/unpacking oauth2client
Cleaning up...
No distributions at all found for oauth2client in /usr/local/lib/python2.7/dist-packages
Storing debug log for failure in /home/pi/.pip/pip.log

pip.log says:

------------------------------------------------------------
/usr/bin/pip run on Mon Aug 29 17:01:13 2016
Getting page https://pypi.python.org/simple/oauth2client/
Could not fetch URL https://pypi.python.org/simple/oauth2client/: connectio$
Will skip URL https://pypi.python.org/simple/oauth2client/ when looking for$
Getting page https://pypi.python.org/simple/
Could not fetch URL https://pypi.python.org/simple/: connection error: ('Co$
Will skip URL https://pypi.python.org/simple/ when looking for download lin$
Cannot fetch index base URL https://pypi.python.org/simple/
URLs to search for versions for oauth2client in /usr/local/lib/python2.7/di$
* https://pypi.python.org/simple/oauth2client/
Getting page https://pypi.python.org/simple/oauth2client/
Could not fetch URL https://pypi.python.org/simple/oauth2client/: connectio$
Will skip URL https://pypi.python.org/simple/oauth2client/ when looking for$
Could not find any downloads that satisfy the requirement oauth2client in /$
Downloading/unpacking oauth2client
Cleaning up...
No distributions at all found for oauth2client in /usr/local/lib/python2.7/$
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in $
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 290$
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, $
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1177, in prepare$
    raise not_found
DistributionNotFound: No distributions at all found for oauth2client in /us$

However, I do have oauth2client installed:

pi@raspberrypi:~ $ apt-cache search oauth2client
python-oauth2client - OAuth 2.0 client library - Python 2.x
python3-oauth2client - OAuth 2.0 client library - Python 3.x

Please could someone advise as to why I am getting this error and how I can update oauth2client.

Many thanks!

Varad A G · Accepted Answer · 2016-08-29 16:45:06Z

I tried to install the package in my Raspberry pi 2 B+.

pi@raspberrypi:/tmp/mytest $ sudo pip install --upgrade oauth2client Requirement already up-to-date: oauth2client in /usr/local/lib/python2.7/dist-packages