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How to install Python 3.7 on Raspbian

Reqirements

Of course, you need a Raspberry Pi with a running Raspbian. I have tested this instructions on a Raspi 1 B+ and Raspbian Stretch (Image from 2019-04-08). I think, any newer hard/software will work too.

Compiling

Because there isn't any package for Python 3.7 on armhf (=Architecture of the Raspi), we have to compile Python from sources. This takes a while, but you can leave it completely unattended.

Downloading the sources

1. Go to https://www.python.org/downloads/source/ and take the newest Release (at the time of writing, its 3.7.3).
2. Download it with wget:
   wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tar.xz
3. Uncompress it with tar:\

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#!/usr/bin/env bash

build_type_arg=${1:-release}
build_type_lower=${build_type_arg,,}
if ! [[ "$build_type_lower" =~ ^(debug|release|relwithdebinfo|minsizerel)$ ]]; then
    echo "invalid build type specified"
    exit 1;
fi

build_dir="cmake-build-${build_type_lower}"

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#!/usr/bin/env python3
import os
import re
import sys
import time
import urllib.request
from collections import defaultdict
from pprint import pprint
from typing import Optional