"ssl module in Python is not available" when installing package with pip3

Step by step guide to install Python 3.6 and pip3 in Ubuntu

1. Install the necessary packages for Python and ssl: $ sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

2. Download and unzip "Python-3.6.8.tar.xz" from https://www.python.org/ftp/python/ into your home directory.

3. Open terminal in that directory and run: $ ./configure

4. Build and install: $ make && sudo make install

5. Install packages with: $ pip3 install package_name

Disclaimer: The above commands are not tested in Ubuntu 20.04 LTS.

If you are on Windows and use anaconda this worked for me:

I tried a lot of other solutions which did not work (Environment PATH Variable changes ...)

The problem can be caused by DLLs in the Windows\System32 folder (e.g. libcrypto-1_1-x64.dll or libssl-1_1-x64.dll or others) placed there by other software.

The fix was installing openSSL from https://slproweb.com/products/Win32OpenSSL.html which replaces the dlls by more recent versions.

If you are on Red Hat/CentOS:

# To allow for building python ssl libs
yum install openssl-devel
# Download the source of *any* python version
cd /usr/src
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
tar xf Python-3.6.2.tar.xz 
cd Python-3.6.2

# Configure the build w/ your installed libraries
./configure

# Install into /usr/local/bin/python3.6, don't overwrite global python bin
make altinstall

I had a similar problem on OSX 10.11 due to installing memcached which installed python 3.7 on top of 3.6.

WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

Spent hours on unlinking openssl, reinstalling, changing paths.. and nothing helped. Changing openssl version back from to older version did the trick:

brew switch openssl 1.0.2e

I did not see this suggestion anywhere in internet. Hope it serves someone.

Agree with the answer by mastaBlasta. Worked for me. I encountered the same problem as the topic description.

Environment: MacOS Sierra. And I use Homebrew.

My solution:

1. Reinstall openssl by brew uninstall openssl; brew install openssl

2. According to the hints given by Homebrew, do the following:

   echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
   export LDFLAGS="-L/usr/local/opt/openssl/lib"
   export CPPFLAGS="-I/usr/local/opt/openssl/include"