“SSL module in Python is not available” when insta

Question

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>?

Answer 1

I was having the same issue and was able to resolve with the following steps:

sudo yum install -y libffi-devel
sudo yum install openssl-devel
cd /usr/src
sudo wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tar.xz
sudo tar xf Python-3.7.1.tar.xz
cd Python-3.7.1
sudo ./configure --enable-optimizations
# Install into /usr/local/bin/python3.7, don't overwrite global python bin
sudo make altinstall

depending on perms, you may not need sudo.

Results:
Collecting setuptools
Collecting pip
Installing collected packages: setuptools, pip
Successfully installed pip-10.0.1 setuptools-39.0.1

should now be able to run

python3.7 -V 

and

pip3.7 -V

When installing packages:

pip3.7 install pandas

or depending on perms, you can also add the --user flag like so:

pip3.7 install pandas --user

Answer 2

I had the same issue trying to install python3.7 on an ubuntu14.04 machine. The issue was that I had some custom folders in my PKG_CONFIG_PATH and in my LD_LIBRARY_PATH, which prevented the python build process to find the system openssl libraries.

so try to clear them and see what happens:

export PKG_CONFIG_PATH=""
export LD_LIBRARY_PATH=""

Answer 3

The python documentation is actually very clear, and following the instructions did the job whereas other answers I found here were not fixing this issue.

1. first, install python 3.x.x from source using, for example with version 3.6.2 https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz

2. make sure you have openssl installed by running brew install openssl

3. unzip it and move to the python directory: tar xvzf Python-3.6.2.tar.xz && cd Python-3.6.2

4. then if the python version is < 3.7, run

CPPFLAGS="-I$(brew --prefix openssl)/include" \ LDFLAGS="-L$(brew --prefix openssl)/lib" \ ./configure --with-pydebug 5. finallly, run make -s -j2 (-s is the silent flag, -j2 tells your machine to use 2 jobs)

Answer 4

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

Answer 5

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

1. Download Python-3.6.1.tar.xz from https://www.python.org/

2. Unzip the file and keep the folder in home directory.

3. Open terminal in that directory and perform the following commands: ./configure make make test sudo make install

4. This will install Python 3.6 but pip3 may not be working.Install necessary modules using:
   sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

5. Now write the following to re run the installation: sudo make sudo make install

6. Now you can install packages with Python 3.6 using pip3 command. For example:
   sudo pip3 install numpy

Answer 6

If you are on OSX and have compiled python from source:

Install openssl using brew brew install openssl

Make sure to follow the instructions brew gives you about setting your CPPFLAGS and LDFLAGS. In my case I am using the openssl@1.1 brew formula and I need these 3 settings for the python build process to correctly link to my SSL library:

export LDFLAGS="-L/usr/local/opt/openssl@1.1/lib"
export CPPFLAGS="-I/usr/local/opt/openssl@1.1/include"
export PKG_CONFIG_PATH="/usr/local/opt/openssl@1.1/lib/pkgconfig"

Assuming the library is installed at that location.