virtual environment

venv 이용하는 방법

1. python3 -m venv [env name]
2. source [env name]/bin/activate

How to escape : Ctrl + D

pyenv

you can use multiple python by using pyenv

How to install (in Mac)

1
2
3
4

    brew update
    brew install pyenv
    echo 'eval "$(pyenv init --path)"' >> ~/.zprofile
    echo 'eval "$(pyenv init -)"' >> ~/.zshrc

How to use

1. Install additional python : pyenv install [python version] eg. pyenv install 3.9.7
2. Setup python in current directory : pyenv local [python version] eg. pyenv local 3.9.7
3. Unset python in current directory : pyenv local --unset

Poetry

Why poetry

1. smarter dependency resolvement compared to pip
2. easier virtual env setting
3. easier packaging

How to use

1. pip3 install poetry : install poetry
2. poetry shell : activate virtual env
   • deactivate : stop virtual env
3. Use following commands
   • poetry install : generate poetry.lock file and install dependencies
     • --no-root : do not install root packages(your project)
     • --no-dev : skip development dependencies
   • poetry update : update poetry.lock file
   • poetry run [command] : run command in virtual env
   • poetry add : adds required packages to your pyproject.toml
     • eg. poetry add pendulum@^2.0.5 or poetry add "pendulum>-2.0.5

• Using different python version
  • poetry env use python3.x or poetry env use 3.x
• Remove virtual env
  • cd into the folder where pyproject.toml is
  • Run poetry env list (this will show you the venv for that project)
  • Then run poetry env remove whatever-WhATeVs-py3.9 to delete it