venv.py 文件源码

def exec_in_virtualenv(options):
    venv = VirtualEnvironment(options)

    venv.create()
    venv_python = venv.get_python_program()

    args = [venv_python, "-m", "performance"] + \
        sys.argv[1:] + ["--inside-venv"]
    # os.execv() is buggy on windows, which is why we use run_cmd/subprocess
    # on windows.
    # * https://bugs.python.org/issue19124
    # * https://github.com/python/benchmarks/issues/5
    if os.name == "nt":
        venv.run_cmd(args, verbose=False)
        sys.exit(0)
    else:
        os.execv(args[0], args)