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author | Georg Brandl <georg@python.org> | 2009-01-01 11:53:55 (GMT) |
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committer | Georg Brandl <georg@python.org> | 2009-01-01 11:53:55 (GMT) |
commit | d0eb8f96929f8c2326dd6059f68242cc07b5de86 (patch) | |
tree | 44508b35ce1a6a80460c720180c334418de03768 | |
parent | fb222635866ced44125822482230a0cf24d0d132 (diff) | |
download | cpython-d0eb8f96929f8c2326dd6059f68242cc07b5de86.zip cpython-d0eb8f96929f8c2326dd6059f68242cc07b5de86.tar.gz cpython-d0eb8f96929f8c2326dd6059f68242cc07b5de86.tar.bz2 |
#4156: make clear that "protocol" is to be replaced with the protocol name.
-rw-r--r-- | Doc/library/urllib2.rst | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/Doc/library/urllib2.rst b/Doc/library/urllib2.rst index 18f5af7..4c7c582 100644 --- a/Doc/library/urllib2.rst +++ b/Doc/library/urllib2.rst @@ -391,23 +391,23 @@ OpenerDirector Objects .. method:: OpenerDirector.add_handler(handler) - *handler* should be an instance of :class:`BaseHandler`. The following methods - are searched, and added to the possible chains (note that HTTP errors are a - special case). + *handler* should be an instance of :class:`BaseHandler`. The following + methods are searched, and added to the possible chains (note that HTTP errors + are a special case). - * :meth:`protocol_open` --- signal that the handler knows how to open *protocol* - URLs. + * :samp:`{protocol}_open` --- signal that the handler knows how to open + *protocol* URLs. - * :meth:`http_error_type` --- signal that the handler knows how to handle HTTP - errors with HTTP error code *type*. + * :samp:`http_error_{type}` --- signal that the handler knows how to handle + HTTP errors with HTTP error code *type*. - * :meth:`protocol_error` --- signal that the handler knows how to handle errors - from (non-\ ``http``) *protocol*. + * :samp:`{protocol}_error` --- signal that the handler knows how to handle + errors from (non-\ ``http``) *protocol*. - * :meth:`protocol_request` --- signal that the handler knows how to pre-process - *protocol* requests. + * :samp:`{protocol}_request` --- signal that the handler knows how to + pre-process *protocol* requests. - * :meth:`protocol_response` --- signal that the handler knows how to + * :samp:`{protocol}_response` --- signal that the handler knows how to post-process *protocol* responses. @@ -441,24 +441,24 @@ OpenerDirector objects open URLs in three stages: The order in which these methods are called within each stage is determined by sorting the handler instances. -#. Every handler with a method named like :meth:`protocol_request` has that +#. Every handler with a method named like :samp:`{protocol}_request` has that method called to pre-process the request. -#. Handlers with a method named like :meth:`protocol_open` are called to handle +#. Handlers with a method named like :samp:`{protocol}_open` are called to handle the request. This stage ends when a handler either returns a non-\ :const:`None` value (ie. a response), or raises an exception (usually :exc:`URLError`). Exceptions are allowed to propagate. In fact, the above algorithm is first tried for methods named - :meth:`default_open`. If all such methods return :const:`None`, the algorithm - is repeated for methods named like :meth:`protocol_open`. If all such methods - return :const:`None`, the algorithm is repeated for methods named - :meth:`unknown_open`. + :meth:`default_open`. If all such methods return :const:`None`, the + algorithm is repeated for methods named like :samp:`{protocol}_open`. If all + such methods return :const:`None`, the algorithm is repeated for methods + named :meth:`unknown_open`. Note that the implementation of these methods may involve calls of the parent :class:`OpenerDirector` instance's :meth:`.open` and :meth:`.error` methods. -#. Every handler with a method named like :meth:`protocol_response` has that +#. Every handler with a method named like :samp:`{protocol}_response` has that method called to post-process the response. @@ -514,8 +514,10 @@ The following members and methods should only be used by classes derived from .. method:: BaseHandler.protocol_open(req) :noindex: + ("protocol" is to be replaced by the protocol name.) + This method is *not* defined in :class:`BaseHandler`, but subclasses should - define it if they want to handle URLs with the given protocol. + define it if they want to handle URLs with the given *protocol*. This method, if defined, will be called by the parent :class:`OpenerDirector`. Return values should be the same as for :meth:`default_open`. @@ -563,8 +565,10 @@ The following members and methods should only be used by classes derived from .. method:: BaseHandler.protocol_request(req) :noindex: + ("protocol" is to be replaced by the protocol name.) + This method is *not* defined in :class:`BaseHandler`, but subclasses should - define it if they want to pre-process requests of the given protocol. + define it if they want to pre-process requests of the given *protocol*. This method, if defined, will be called by the parent :class:`OpenerDirector`. *req* will be a :class:`Request` object. The return value should be a @@ -574,8 +578,10 @@ The following members and methods should only be used by classes derived from .. method:: BaseHandler.protocol_response(req, response) :noindex: + ("protocol" is to be replaced by the protocol name.) + This method is *not* defined in :class:`BaseHandler`, but subclasses should - define it if they want to post-process responses of the given protocol. + define it if they want to post-process responses of the given *protocol*. This method, if defined, will be called by the parent :class:`OpenerDirector`. *req* will be a :class:`Request` object. *response* will be an object @@ -660,7 +666,9 @@ ProxyHandler Objects .. method:: ProxyHandler.protocol_open(request) :noindex: - The :class:`ProxyHandler` will have a method :meth:`protocol_open` for every + ("protocol" is to be replaced by the protocol name.) + + The :class:`ProxyHandler` will have a method :samp:`{protocol}_open` for every *protocol* which has a proxy in the *proxies* dictionary given in the constructor. The method will modify requests to go through the proxy, by calling ``request.set_proxy()``, and call the next handler in the chain to @@ -865,9 +873,10 @@ HTTPErrorProcessor Objects For 200 error codes, the response object is returned immediately. For non-200 error codes, this simply passes the job on to the - :meth:`protocol_error_code` handler methods, via :meth:`OpenerDirector.error`. - Eventually, :class:`urllib2.HTTPDefaultErrorHandler` will raise an - :exc:`HTTPError` if no other handler handles the error. + :samp:`{protocol}_error_code` handler methods, via + :meth:`OpenerDirector.error`. Eventually, + :class:`urllib2.HTTPDefaultErrorHandler` will raise an :exc:`HTTPError` if no + other handler handles the error. .. _urllib2-examples: |