template.py 文件源码

def _compile_from_file(self, path, filename):
        if path is not None:
            util.verify_directory(os.path.dirname(path))
            filemtime = os.stat(filename)[stat.ST_MTIME]
            if not os.path.exists(path) or \
                    os.stat(path)[stat.ST_MTIME] < filemtime:
                data = util.read_file(filename)
                _compile_module_file(
                    self,
                    data,
                    filename,
                    path,
                    self.module_writer)
            module = compat.load_module(self.module_id, path)
            del sys.modules[self.module_id]
            if module._magic_number != codegen.MAGIC_NUMBER:
                data = util.read_file(filename)
                _compile_module_file(
                    self,
                    data,
                    filename,
                    path,
                    self.module_writer)
                module = compat.load_module(self.module_id, path)
                del sys.modules[self.module_id]
            ModuleInfo(module, path, self, filename, None, None)
        else:
            # template filename and no module directory, compile code
            # in memory
            data = util.read_file(filename)
            code, module = _compile_text(
                self,
                data,
                filename)
            self._source = None
            self._code = code
            ModuleInfo(module, None, self, filename, code, None)
        return module