New submission from Lotus Qin:
function in urllib.request.build_opener()
def isclass(obj):
return isinstance(obj, type) or hasattr(obj, "__bases__")
should it be `obj` or `obj.__class__`?
cause in the man of 3.4, there is only `class.__bases__`, but the code there
may function like `instance.__bases__`.
===
# my code behave like this:
cookie = http.cookiejar.CookieJar()
cookie_handler = urllib.request.HTTPCookieProcessor(cookie)
opener = urllib.request.build_opener(cookie_handler)
# the variable `skip` in `build_opener` will be empty cause `isclass(obj)`
always return false.
cookie_handler.__bases__
AttributeError: 'HTTPCookieProcessor' object has no attribute '__bases__'
cookie_handler.__class__.__bases__
(,)
--
components: Library (Lib)
messages: 215241
nosy: ZealotuS
priority: normal
severity: normal
status: open
title: Error usage of class.__bases__()
type: behavior
versions: Python 3.4
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