diff options
Diffstat (limited to 'Lib/urllib2.py')
| -rw-r--r-- | Lib/urllib2.py | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/Lib/urllib2.py b/Lib/urllib2.py index d0d4073..58b480d 100644 --- a/Lib/urllib2.py +++ b/Lib/urllib2.py @@ -14,36 +14,36 @@ non-error returns. The HTTPRedirectHandler automatically deals with HTTP 301, 302, 303 and 307 redirect errors, and the HTTPDigestAuthHandler deals with digest authentication. -urlopen(url, data=None) -- basic usage is the same as original +urlopen(url, data=None) -- Basic usage is the same as original urllib. pass the url and optionally data to post to an HTTP URL, and get a file-like object back. One difference is that you can also pass a Request instance instead of URL. Raises a URLError (subclass of IOError); for HTTP errors, raises an HTTPError, which can also be treated as a valid response. -build_opener -- function that creates a new OpenerDirector instance. -will install the default handlers. accepts one or more Handlers as +build_opener -- Function that creates a new OpenerDirector instance. +Will install the default handlers. Accepts one or more Handlers as arguments, either instances or Handler classes that it will -instantiate. if one of the argument is a subclass of the default +instantiate. If one of the argument is a subclass of the default handler, the argument will be installed instead of the default. -install_opener -- installs a new opener as the default opener. +install_opener -- Installs a new opener as the default opener. objects of interest: -OpenerDirector -- +OpenerDirector -- -Request -- an object that encapsulates the state of a request. the -state can be a simple as the URL. it can also include extra HTTP +Request -- An object that encapsulates the state of a request. The +state can be as simple as the URL. It can also include extra HTTP headers, e.g. a User-Agent. BaseHandler -- exceptions: -URLError-- a subclass of IOError, individual protocols have their own -specific subclass +URLError -- A subclass of IOError, individual protocols have their own +specific subclass. -HTTPError-- also a valid HTTP response, so you can treat an HTTP error -as an exceptional event or valid response +HTTPError -- Also a valid HTTP response, so you can treat an HTTP error +as an exceptional event or valid response. internals: BaseHandler and parent @@ -334,7 +334,8 @@ class OpenerDirector: added = True if added: - # XXX why does self.handlers need to be sorted? + # the handlers must work in an specific order, the order + # is specified in a Handler attribute bisect.insort(self.handlers, handler) handler.add_parent(self) |