I can try to install packages in python 3.6.4 with pip but I found many errors. I try also command like: `easy_install, pip install --upgrade --force-reinstall <package>, pip install --ignore-installed <package>`. The error result always the same: 

```
 Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002E91DCF04E0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/<package>/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002E91DCF0BE0>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed',)': /simple/<package>/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002E91DCF0748>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/<package>/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002E91DCF0C18>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed',)': /simple/<package>/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002E91DCF02E8>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/<package>/

```

I think that I don't reach the <https://pypi.python.org/simple>