问题
I'm using Python & okta-aws tools and in order to fetch correct credentials on aws I need to run okta-aws init. But got an error message of Could not read roles from Okta and the system prompted that"Your Pipfile requires python_version 3.7, but you are using 3.8.3 (/usr/local/Cellar/o/1.1.4/l/.venv/bin/python).
I've tried to search all the Pipfiles on the mac and it seems that the Pipflie under my ~/Pipfile and /usr/local/Cellar/python@3.8/3.8.3_2/libexec/bin/Pipfile all have the same python version of 3.8, while the Pipfile under my /usr/local/Cellar/okta-aws-tools/1.1.4/libexec/Pipfile has required python_version = 3.7.
I've been struggling with this for a while and really not sure how I can fix this.
回答1:
Consider installing pyenv with Homebrew on macOS
brew update
brew install pyenv
Clone the repository to to get the latest version of pyenv
git clone https://github.com/pyenv/pyenv.git ~/.pyenv
Define your environment variables
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(pyenv init -)"' >> ~/.bash_profile
source ~/.bash_profile
Restart your shell so the path changes take effect
exec "$SHELL"
Verify the installation and check the available python versions
pyenv install --list
Install the required python version
pyenv install 3.7
Set it as your global version after installation
pyenv global 3.7
Verify your current python version the system is using
python3 --version
回答2:
I recommend you to install and use pyenv, a Python Version Management. Once intalled pyenv, install python 3.7:
pyenv install 3.7
And then set the environment PYENV_VERSION to version of python you want to use, on this case will be 3.7:
pyenv shell 3.7
回答3:
brew only approach.
rm -rf $(brew --repository)/Library/Taps/company
brew tap-new company/team
brew extract python@3.7 company/team --version=3.7.9
HOMEBREW_NO_AUTO_UPDATE=1 brew install company/team/python@3.7.9
brew link --force company/team/python@3.7.9
This creates a local tap, extracts python 3.7.X to a formula in that local tap and then installs and links that formula
The created local tap and the new formula file can be found in
$(brew --repository)/Library/Taps/company/homebrew-team
来源：https://stackoverflow.com/questions/62898911/how-to-downgrade-python-version-from-3-8-to-3-7-mac