How do I install Python in Google Cloud Shell?

Question

I have python 3.5 on my google cloud shell and want 3.7 so I can do command line debugging of code I am going to deploy via google cloud functions (and use 3.7 features such as f-strings).

I have tried various forms of the following:

sudo apt-get install python37

and always get back

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package python37

Answer 1

# install pyenv to install python on persistent home directory
curl https://pyenv.run | bash

# add to path
echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init -)"' >> ~/.bashrc
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc

# updating bashrc
source ~/.bashrc

# install python 3.7.4 and make default
pyenv install 3.7.4
pyenv global 3.7.4

# execute
python

This is based on @yungchin answer.

Answer 2

This worked for me on the GCP shell.

# Install requirements
sudo apt-get install -y build-essential checkinstall libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev zlib1g-dev openssl libffi-dev python3-dev python3-setuptools wget 

# Prepare to build
mkdir /tmp/Python37
cd /tmp/Python37

# Pull down Python 3.7, build, and install
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz
tar xvf Python-3.7.0.tar.xz
cd /tmp/Python37/Python-3.7.0
./configure
sudo make altinstall

Then you would just call Python like so:

python3.7 ./yourScript.py

Src: https://serverfault.com/questions/918335/best-way-to-run-python-3-7-on-ubuntu-16-04-which-comes-with-python-3-5