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

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 Your system seems to be out of date.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 && 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.

Examples related to python

programming a servo thru a barometer Is there a way to view two blocks of code from the same file simultaneously in Sublime Text? python variable NameError Why my regexp for hyphenated words doesn't work? Comparing a variable with a string python not working when redirecting from bash script is it possible to add colors to python output? Get Public URL for File - Google Cloud Storage - App Engine (Python) Real time face detection OpenCV, Python xlrd.biffh.XLRDError: Excel xlsx file; not supported Could not load dynamic library 'cudart64_101.dll' on tensorflow CPU-only installation

Examples related to pip

How to fix error "ERROR: Command errored out with exit status 1: python." when trying to install django-heroku using pip "E: Unable to locate package python-pip" on Ubuntu 18.04 How to Install pip for python 3.7 on Ubuntu 18? What is the meaning of "Failed building wheel for X" in pip install? Could not install packages due to an EnvironmentError: [Errno 13] How do I install Python packages in Google's Colab? Conda version pip install -r requirements.txt --target ./lib pip: no module named _internal AttributeError: Module Pip has no attribute 'main' Error after upgrading pip: cannot import name 'main'

Examples related to pypi

'pip install' fails for every package ("Could not find a version that satisfies the requirement") Why is python setup.py saying invalid command 'bdist_wheel' on Travis CI? Installing python module within code pypi UserWarning: Unknown distribution option: 'install_requires' Find all packages installed with easy_install/pip? Installing specific package versions with pip Why use pip over easy_install? python setup.py uninstall What is setup.py?