Compiling and Installing Python 3.7 b5 on Raspberry Pi
Python3.7 is scheduled to be released at the end of June 2018. I wanted to explore some of the new things and put it on a Raspberry PI. Here are the instructions.
Building python 3.7 beta on Raspberry Pi
based on steps found at https://www.scivision.co/compile-install-python-beta-raspberry-pi/
my steps
Choose a Pi
# Pi 3 B+
ssh rpihp1
screen -R
$ df -h .
Filesystem Size Used Avail Use% Mounted on
/dev/root 59G 1.2G 55G 3% /
plenty of disk space. (after python3.7b5 install, I had about 400MB less disk space)
Install some pre-reqs
sudo apt install -y libffi-dev libbz2-dev liblzma-dev \
libsqlite3-dev libncurses5-dev libgdbm-dev zlib1g-dev \
libreadline-dev libssl-dev tk-dev build-essential \
libncursesw5-dev libc6-dev openssl git
We are going to build from Python source code.
Download, extract, configure, compile and install
mkdir -p ~/projects/python37
wget https://github.com/python/cpython/archive/v3.7.0b5.tar.gz
tar zxvf v3.7.0b5.tar.gz
cd cpython-3.7.0b5
./configure --prefix=$HOME/.local --enable-optimizations
make -j 5 -l 4 # quad core, so set j=4+1
make install
Note: It’s kinda fun to watch htop updated when the compilation is running…
Once installed, setup environment in your ~/.profile to add the new home of python3.7 to your path:
# set PATH so it includes user's private ~/.local/bin if it exists
if [ -d "$HOME/.local/bin" ] ; then
PATH="$HOME/.local/bin:$PATH"
fi
log out of all shells to get this new setting
Running
Tkinter is included…
pi@rpihp1:~ $ python3.7
Python 3.7.0b5 (default, Jun 10 2018, 16:24:31)
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from tkinter import *
>>> ^D
The New-in-3.7 @dataclass decorator is available
>>> from dataclasses import dataclass
>>> @dataclass
... class SimpleDataObject(object):
... '''
... In this case,
... __init__, __repr__, __eq__, will all be generated automatically.
... '''
...
... field_a: int
... field_b: str
...
>>> example = SimpleDataObject(1, 'b')
>>> print(example) # SimpleDataObject(field_a=1, field_b='b')
SimpleDataObject(field_a=1, field_b='b')
>>>