Function setup_venv_with_pip_setuptools

Lib/test/support/__init__.py:2531–2567

(venv_dir)

# and returns the paths to the venv directory and the python executable
@contextlib.contextmanager
def setup_venv_with_pip_setuptools(venv_dir):
    import subprocess
    from .os_helper import temp_cwd

    def run_command(cmd):
        if verbose:
            import shlex
            print()
            print('Run:', ' '.join(map(shlex.quote, cmd)))
            subprocess.run(cmd, check=True)
        else:
            subprocess.run(cmd,
                           stdout=subprocess.PIPE,
                           stderr=subprocess.STDOUT,
                           check=True)

    with temp_cwd() as temp_dir:
        # Create virtual environment to get setuptools
        cmd = [sys.executable, '-X', 'dev', '-m', 'venv', venv_dir]
        run_command(cmd)

        venv = os.path.join(temp_dir, venv_dir)

        # Get the Python executable of the venv
        python_exe = os.path.basename(sys.executable)
        if sys.platform == 'win32':
            python = os.path.join(venv, 'Scripts', python_exe)
        else:
            python = os.path.join(venv, 'bin', python_exe)

        cmd = (python, '-X', 'dev',
               '-m', 'pip', 'install',
               _findwheel('setuptools'),
               )
        run_command(cmd)

        yield python


# True if Python is built with the Py_DEBUG macro defined: if