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

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

I’ve install Python 3.4 and Python 3.6 on my local machine successfully, but am unable to install packages with pip3.

When I execute pip3 install <package>, I get the following SSL related error:

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting <package>
  Could not fetch URL https://pypi.python.org/simple/<package>/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
  Could not find a version that satisfies the requirement <package> (from versions: )
No matching distribution found for <package>

How can I fix my Python3.x install so that I can install packages with pip install <package>?

Asked By: Harukaze

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Answer #1:

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.

Answered By: arsho

Answer #2:

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 WindowsSystem32 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.

Answered By: juergi

Answer #3:

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
Answered By: The Aelfinn

Answer #4:

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.

Answered By: dsomnus

Answer #5:

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"
    
Answered By: nathanyu

Answer #6:

In Ubuntu, this can help:

cd Python-3.6.2
./configure --with-ssl
make
sudo make install
Answered By: tingtinghuang

Answer #7:

The problem probably caused by library missing.

Before you install python 3.6, make sure you install all the libraries required for python.

$ sudo apt-get install build-essential checkinstall
$ sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

More information in How to Install Python 3.6.0 on Ubuntu & LinuxMint

Answered By: PengShaw

Answer #8:

If you are on Windows and use Anaconda you can try running “pip install …” command in Anaconda Prompt instead of cmd.exe, as user willliu1995 suggests here. This was the fastest solution for me, that does not require installation of additional components.

Answered By: Butterfly

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