Question

我想在调用static_url（）时关闭？v =版本信息。

我有以下staticFileHandler类，我尝试覆盖make_static_url（）类方法：

class BaseHandlerStatic(tornado.web.StaticFileHandler):
   @classmethod
   def make_static_url(cls, settings, path, include_version=False):
      super().make_static_url(settings, path, include_version)

不幸的是，这样做会导致我的程序因500错误而崩溃：

"/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/tornado-4.5.dev1-py3.5-macosx-10.6-intel.egg/tornado/web.py", line 1342, in static_url
        return base + get_url(self.settings, path, **kwargs)
    TypeError: Can't convert 'NoneType' object to str implicitly
[E 170213 16:23:32 web:1977] 500 GET / (127.0.0.1) 14.66ms

有人可以告诉我我做错了什么以及如何将include_version设置为False？

由于

Answer 1

您需要return声明：

class BaseHandlerStatic(tornado.web.StaticFileHandler):
   @classmethod
   def make_static_url(cls, settings, path, include_version=False):
      return super().make_static_url(settings, path, include_version)

否则你的make_static_url会隐式返回None，而base + get_url(...)表达式会尝试将base与None连接起来引发异常。

Tornado为static_url（）关闭include_version

1 个答案: