[PYTHON] What is pyvenv
What is pyvenv
- A mechanism to have separate library sets required for development according to the purpose
Example of use
Example of a case where two projects (Project A and Project B) are developed with one development machine
- For project A, I want to use libray A ver.1.0 and library B ver.1.0.
- In project B, I want to use ver.2.1 of libray A
I want to develop project A and project B with the same development machine, but I want to use different environments for each development.
Example of reason to use properly
- library A uses different ver for each project
- I don't want to install library B in project B (because I don't want to install unnecessary things and make the process heavy, conflict with the project code, etc.)
Use pyvenv to separate the environment (required library set)
pyvenv prj_a_env
(Pip install the libraries needed for Project A)
pyvenv prj_b_env
(Pip install the libraries needed for project B)
Develop each project in the created virtual environment
- Note that librayr C ver.3.0 installed in the main Python environment that does not use pyvenv will be reflected in all virtual environments.
Library installation destination when pip install with pyvenv
Under prj_a_env / Lib / site-packages /
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