Using pip: -i https://pypi.python.org/simple

                          ROUND 1                           
Current constraints:
  pandas==0.18.1
  pandas-datareader==0.5.0

Finding the best candidates:
  found candidate pandas==0.18.1 (constraint was ==0.18.1)
  found candidate pandas-datareader==0.5.0 (constraint was ==0.5.0)

Finding secondary dependencies:
  pandas==0.18.1 not in cache, need to check index
  pandas==0.18.1            requires numpy>=1.7.0, python-dateutil>=2, pytz>=2011k
  pandas-datareader==0.5.0 not in cache, need to check index
  pandas-datareader==0.5.0  requires lxml, pandas>=0.17.0, pandas>=0.19.2, requests-file, requests-file, requests-ftp, requests-ftp, requests>=2.3.0, requests>=2.3.0, wrapt

New dependencies found in this round:
  adding ['lxml', '', '[]']
  adding ['numpy', '>=1.7.0', '[]']
  adding ['pandas', '>=0.17.0,>=0.19.2', '[]']
  adding ['python-dateutil', '>=2', '[]']
  adding ['pytz', '>=2011k', '[]']
  adding ['requests', '>=2.3.0', '[]']
  adding ['requests-file', '', '[]']
  adding ['requests-ftp', '', '[]']
  adding ['wrapt', '', '[]']
Removed dependencies in this round:
Unsafe dependencies in this round:
------------------------------------------------------------
Result of round 1: not stable

                          ROUND 2                           
Current constraints:
  lxml
  numpy>=1.7.0
  pandas==0.18.1,>=0.17.0,>=0.19.2
  pandas-datareader==0.5.0
  python-dateutil>=2
  pytz>=2011k
  requests>=2.3.0
  requests-file
  requests-ftp
  wrapt

Finding the best candidates:
  found candidate lxml==4.2.0 (constraint was <any>)
  found candidate numpy==1.14.2 (constraint was >=1.7.0)
Using pip: -i https://pypi.python.org/simple

                          ROUND 1                           
Current constraints:
  pandas==0.18.1
  pandas-datareader==0.5.0

Finding the best candidates:
  found candidate pandas==0.18.1 (constraint was ==0.18.1)
  found candidate pandas-datareader==0.5.0 (constraint was ==0.5.0)

Finding secondary dependencies:
  pandas==0.18.1 not in cache, need to check index
  pandas==0.18.1            requires numpy>=1.7.0, python-dateutil>=2, pytz>=2011k
  pandas-datareader==0.5.0 not in cache, need to check index
  pandas-datareader==0.5.0  requires lxml, pandas>=0.17.0, pandas>=0.19.2, requests-file, requests-file, requests-ftp, requests-ftp, requests>=2.3.0, requests>=2.3.0, wrapt

New dependencies found in this round:
  adding ['lxml', '', '[]']
  adding ['numpy', '>=1.7.0', '[]']
  adding ['pandas', '>=0.17.0,>=0.19.2', '[]']
  adding ['python-dateutil', '>=2', '[]']
  adding ['pytz', '>=2011k', '[]']
  adding ['requests', '>=2.3.0', '[]']
  adding ['requests-file', '', '[]']
  adding ['requests-ftp', '', '[]']
  adding ['wrapt', '', '[]']
Removed dependencies in this round:
Unsafe dependencies in this round:
------------------------------------------------------------
Result of round 1: not stable

                          ROUND 2                           
Current constraints:
  lxml
  numpy>=1.7.0
  pandas==0.18.1,>=0.17.0,>=0.19.2
  pandas-datareader==0.5.0
  python-dateutil>=2
  pytz>=2011k
  requests>=2.3.0
  requests-file
  requests-ftp
  wrapt

Finding the best candidates:
  found candidate lxml==4.2.0 (constraint was <any>)
  found candidate numpy==1.14.2 (constraint was >=1.7.0)