venv manager

Created in an effort to simplify the management of venvs by providing a pyenv-like workflow for creation, activation, auto-activation and auto-deactivation based on project directory.

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TOC

code structure

setup

identified drawbacks

future plans

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code structure

create_env

• Take input the name of the virtual environment to create.
• If no name is provided, consider “.venv” as the default name.
• Check if a venv with the same name exists.
  • If it does, echo out “Environment already exists”
  • Else:
    • create .python-version in the directory.
    • write name of virtual environment in it.
    • create venv in my-venvs folder.

activate_env

• check that no virtual environment is active
  • If not activate:
    • check if .python-version exists.
    • If it doesn’t exist: ask for name of venv to activate.
  • Else: echo message prompting the deactivation of current venv

cd_into_env

[needs to be improved]

• check if .python-version exists in current directory.
  • if exists:
    • read venv name
    • check that no virtual env is active.
      • if not active: activate venv in .python-version
  • else:
    • checks if virtual env is active and current directory is subdirectory.
    • if not : deactivate current env.

setting up the scripts in your system

OS X

• Goto folder User/{username}
  • go > go to folder > type: ~ and hit go
• in .bash_profile add the following:

source ~/venv-manager/create_env.sh
source ~/venv-manager/activate_env.sh
source ~/venv-manager/cd_into_env.sh

• refresh terminal and it should be working

identified drawbacks

• auto-activate and deactivate only works if you cd in and out of the directory. It will not work if you directly open a terminal inside the directory.
• auto-activate and deactivate will not work if you cd from one directory with .python-version to another.

For the following file structure
|- dir_1
    |- .python-version > trial-1
|- dir_2
    |- .python-version > trial-2

Directly cd-ing from dir_1 to dir_2 will not change active env

(trial-1)...:dir_1$ cd ../dir_2
(trial-1)...:dir_2$

future additions that may or may not materialize

• create symlink for venvs in the directories.