install_egg_info.py 文件源码

def finalize_options(self):
        self.set_undefined_options('install_lib',
                                   ('install_dir', 'install_dir'))
        self.set_undefined_options('install',('install_layout','install_layout'))
        if sys.hexversion > 0x2060000:
            self.set_undefined_options('install',('prefix_option','prefix_option'))
        ei_cmd = self.get_finalized_command("egg_info")
        basename = pkg_resources.Distribution(
            None, None, ei_cmd.egg_name, ei_cmd.egg_version
        ).egg_name() + '.egg-info'

        if self.install_layout:
            if not self.install_layout.lower() in ['deb']:
                raise DistutilsOptionError(
                    "unknown value for --install-layout")
            basename = basename.replace('-py%s' % pkg_resources.PY_MAJOR, '')
        elif self.prefix_option or 'real_prefix' in sys.__dict__:
            # don't modify for virtualenv
            pass
        else:
            basename = basename.replace('-py%s' % pkg_resources.PY_MAJOR, '')

        self.source = ei_cmd.egg_info
        self.target = os.path.join(self.install_dir, basename)
        self.outputs = [self.target]