If I want Python 3.7, I have to compile it myself. Use “dnf” for RedHat based distros and “apt-get” for Debian.
sudo dnf install readline-devel # or up-arrow won't navigate history sudo dnf install sqlite-devel openssl-devel bzip2-devel sudo dnf install xz-devel
Then on Fedora and CentOS…
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz tar -xvf Python-3.7.0.tgz cd Python-3.7.0/ ./configure --prefix=/usr/local/bin/python3.7 --enable-optimizations make sudo make install # sudo ln -s /usr/local/bin/python3.7/bin/python3 /usr/bin/python3
On my dev system at work, I seem to have configured a prefix like /opt/python3. Then when CentOS updates itself, it changes a symbolic link in /usr/bin/python3
sudo rm /usr/bin/python3 && sudo ln -s /opt/python3/bin/python3 /usr/bin/python3
For OS X, brew upgrading httpie seems to upgrade to the latest Python 3, so I didn't have to do stuff.
For Debian (eg., Rasbian) try the following (on raspberry pi libssl-dev isn't available):
sudo apt-get install build-essential libncursesw5-dev libreadline-dev libssl-dev libgdbm-dev libc6-dev libsqlite3-dev tk-dev libffi-dev
On Raspbian Jessie the make command (below) may have output that looks like this:
The necessary bits to build these optional modules were not found: _bz2 _lzma _ssl
On Raspbian, the pip module may not work because it relies on the ssl module.
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Python's setup.py explains:
Python requires an OpenSSL 1.0.2 or 1.1 compatible libssl with X509_VERIFY_PARAM_set1_host().
If you check the version of ssh:
$ openssl version OpenSSL 1.0.1t 3 May 2016
That OpenSSL is too old. So you may have to make your own OpenSSL library.
# Add the backport apt source. echo "deb-src http://httpredir.debian.org/debian jessie-backports main contrib non-free" | \ sudo tee /etc/apt/sources.list.d/jessie-backports.list sudo apt update # Get the openssl source apt-get source openssl/jessie-backports # Make and install it. cd openssl-1.0.2k/ ./config --prefix=/usr make make test sudo make install
Update: The following apt-cache policy command showed the old libssl was still installed. It's probably bad, but I installed the new one with apt install -t jessie-backports.
sudo apt-cache policy libssl-dev
Then, back to Python3, on Raspbian, I put it in the default location, /usr/local:
screen # Because using optimizations will take hours cd Python-3.7.0/ ./configure --enable-optimizations make -j4 sudo make install [[ $TERM != "screen" ]] || exit # exit if in screen session
Sometimes I have trouble with pip3 (ImportError: cannot import name 'main' from 'pip'), so prefer to use “python3 -m pip” instead.
sudo -H python3 -m pip install --upgrade pip sudo -H python3 -m pip install requests sudo -H python3 -m pip install numpy sudo -H python3 -m pip install matplotlib python3 -m pip install --user --upgrade httpie
sudo python3 -m pip install --no-deps impyla sudo python3 -m pip install --no-deps git+https://github.com/snowch/thrift_sasl # sudo python3 -m pip install thriftpy