深入理解Virtual Environment Virtualenv in Python

• virtual environment

  PEP405 – Python Virtual Environments

  The utility of Python virtual Environments has already been well established by the popularity of existing third-party virtual-environment tools, primarily $IanBicking$'s virtualenv.

  Virtual environments are already widely used for dependency management and isolation.

  由于缺乏Python的原生支持,早期的虚拟环境工具 don’t copy the Python binary into the virtual environment, cannot provide reliable isolation from system site directories.

  Virtualenv which does copy the Python binary, is forced to dumplicate much of P