install_lib.py 文件源码

def finalize_options(self):
        # Get all the information we need to install pure Python modules
        # from the umbrella 'install' command -- build (source) directory,
        # install (target) directory, and whether to compile .py files.
        self.set_undefined_options('install',
                                   ('build_lib', 'build_dir'),
                                   ('install_lib', 'install_dir'),
                                   ('force', 'force'),
                                   ('compile', 'compile'),
                                   ('optimize', 'optimize'),
                                   ('skip_build', 'skip_build'),
                                  )

        if self.compile is None:
            self.compile = 1
        if self.optimize is None:
            self.optimize = 0

        if not isinstance(self.optimize, int):
            try:
                self.optimize = int(self.optimize)
                if self.optimize not in (0, 1, 2):
                    raise AssertionError
            except (ValueError, AssertionError):
                raise DistutilsOptionError, "optimize must be 0, 1, or 2"