build_py.py 文件源码

def finalize_options(self):
        self.set_undefined_options('build',
                                   ('build_lib', 'build_lib'),
                                   ('force', 'force'))

        # Get the distribution options that are aliases for build_py
        # options -- list of packages and list of modules.
        self.packages = self.distribution.packages
        self.py_modules = self.distribution.py_modules
        self.package_data = self.distribution.package_data
        self.package_dir = {}
        if self.distribution.package_dir:
            for name, path in self.distribution.package_dir.items():
                self.package_dir[name] = convert_path(path)
        self.data_files = self.get_data_files()

        # Ick, copied straight from install_lib.py (fancy_getopt needs a
        # type system!  Hell, *everything* needs a type system!!!)
        if not isinstance(self.optimize, int):
            try:
                self.optimize = int(self.optimize)
                assert 0 <= self.optimize <= 2
            except (ValueError, AssertionError):
                raise DistutilsOptionError("optimize must be 0, 1, or 2")