pip install fails for every package Could not find a version that satisfies the requirement

Question

pip install  lt package name gt  is failing for every package for me  This is what I get   Could not find a version that satisfies the requirement  lt package-name  from versions    No matching distribution found for  lt package-name gt    I saw similar questions on Stack nbsp Overflow  but they don t seem to be fully related to this one   Also  this post suggests that this might happen if PyPI is down or my IP address is blacklisted  It seems both are not true for my case   pip shows up-to-date on running pip install --upgrade pip

User · Accepted Answer

Upgrade pip as follows   curl https   bootstrap pypa io get-pip py   python   Note  You may need to use sudo python above if not in a virtual environment   What s happening   Python org sites are stopping support for TLS versions 1 0 and 1 1  This means that Mac nbsp OS nbsp X version 10 12  Sierra  or older will not be able to use pip unless they upgrade pip as above    Note that upgrading pip via pip install --upgrade pip will also not upgrade it correctly  It is a chicken-and-egg issue   This thread explains it  thanks to this Twitter post       Mac users who use pip and PyPI       If you are running macOS OS X version 10 12 or older  then you ought   to upgrade to the latest pip  9 0 3  to connect to the Python Package   Index securely   curl https   bootstrap pypa io get-pip py   python       and we recommend you do that by April 8th       Pip 9 0 3 supports TLSv1 2 when running under system Python on macOS  lt    10 13  Official release notes  https   pip pypa io en stable news    Also  the Python status page      Completed - The rolling brownouts are finished  and TLSv1 0 and TLSv1 1 have been disabled   Apr 11  15 37 UTC      Update - The rolling brownouts have been upgraded to a blackout  TLSv1 0 and TLSv1 1 will be rejected with a HTTP 403 at all times    Apr 8  15 49 UTC   Lastly  to avoid other install errors  make sure you also upgrade setuptools after doing the above   pip install --upgrade setuptools

User · Answer

Support for TLS 1 0 and 1 1 was dropped for PyPI  If your system does not use a more recent version  it could explain your error    Could you try reinstalling pip system-wide  to update your system dependencies to a newer version of TLS   This seems to be related to Unable to install Python libraries  See Dominique Barton s answer      Apparently pip is trying to access PyPI via HTTPS  which is encrypted and fine   but with an old  insecure  SSL version  Your system seems to be out of date  It might help if you update your packages       On Debian-based systems I d try   apt-get update  amp  amp  apt-get upgrade python-pip       On Red Hat Linux-based systems   yum update python-pip    or python2-pip  at least on Red Hat Linux 7        On Mac   sudo easy install -U pip       You can also try to update openssl separately

[python] 'pip install' fails for every package ("Could not find a version that satisfies the requirement")

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