当我在开发过程中使用基本 Flask 服务器运行我的应用程序时,我试图找出导致此错误的原因。我以此开头:
from myapp import app
app.run(debug=True, port=5001)
一切都很好,我将继续编码和刷新等,但过了一会儿我收到递归错误,必须按 Ctrl-C 组合键并重新启动服务器。没什么大不了的,只是时不时要处理有点烦人。
这是完整的回溯,我试图用它来确定原因,但看不到任何突出的东西(可能与 werkzeug 如何使用 Cookie.py 有关?):
Traceback (most recent call last):
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/app.py", line 1701, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/wsgi.py", line 411, in __call__
return self.app(environ, start_response)
(last bit repeated a bunch - trimmed to fit in posting size requirements)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/app.py", line 1685, in wsgi_app
with self.request_context(environ):
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/ctx.py", line 274, in __enter__
self.push()
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/ctx.py", line 238, in push
self.session = self.app.open_session(self.request)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/app.py", line 792, in open_session
return self.session_interface.open_session(self, request)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/flask/sessions.py", line 191, in open_session
secret_key=key)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/contrib/securecookie.py", line 309, in load_cookie
data = request.cookies.get(key)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/utils.py", line 77, in __get__
value = self.func(obj)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/wrappers.py", line 418, in cookies
cls=self.dict_storage_class)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/http.py", line 741, in parse_cookie
cookie.load(header)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/Cookie.py", line 632, in load
self.__ParseString(rawdata)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/Cookie.py", line 665, in __ParseString
self.__set(K, rval, cval)
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/_internal.py", line 290, in _BaseCookie__set
morsel = self.get(key, _ExtendedMorsel())
File "/Users/jeff/.virtualenvs/fmll/lib/python2.7/site-packages/werkzeug/_internal.py", line 271, in __init__
Morsel.__init__(self)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/Cookie.py", line 438, in __init__
dict.__setitem__(self, K, "")
RuntimeError: maximum recursion depth exceeded while calling a Python object
最佳答案
因为它发生在你的开发过程中,你可以增加递归限制,在启动你的服务器之前,使用:
sys.setrecursionlimit(2000) # Choose the right figure for you here
# the value on my system is 1000 but this is platform-dependant
但是,您应该非常小心地使用它,除非您非常了解它的影响,否则最好不要在生产中使用它。
引用:http://docs.python.org/2/library/sys.html#sys.setrecursionlimit
关于python - Flask服务器偶尔报错: 'RuntimeError: maximum recursion depth exceeded while calling a Python object' ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14330256/