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Markup fixes

This commit is contained in:
Andrew M. Kuchling 2008-09-30 13:00:51 +00:00
parent 17ff29d061
commit db74c8a309
1 changed files with 11 additions and 10 deletions
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21
Doc/howto/urllib2.rst
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@ -182,11 +182,12 @@ which comes after we have a look at what happens when things go wrong.
Handling Exceptions
===================
*urlopen* raises ``URLError`` when it cannot handle a response (though as usual
with Python APIs, builtin exceptions such as ValueError, TypeError etc. may also
*urlopen* raises :exc:`URLError` when it cannot handle a response (though as usual
with Python APIs, builtin exceptions such as
:exc:`ValueError`, :exc:`TypeError` etc. may also
be raised).
``HTTPError`` is the subclass of ``URLError`` raised in the specific case of
:exc:`HTTPError` is the subclass of :exc:`URLError` raised in the specific case of
HTTP URLs.
URLError
@ -215,12 +216,12 @@ the status code indicates that the server is unable to fulfil the request. The
default handlers will handle some of these responses for you (for example, if
the response is a "redirection" that requests the client fetch the document from
a different URL, urllib2 will handle that for you). For those it can't handle,
urlopen will raise an ``HTTPError``. Typical errors include '404' (page not
urlopen will raise an :exc:`HTTPError`. Typical errors include '404' (page not
found), '403' (request forbidden), and '401' (authentication required).
See section 10 of RFC 2616 for a reference on all the HTTP error codes.
The ``HTTPError`` instance raised will have an integer 'code' attribute, which
The :exc:`HTTPError` instance raised will have an integer 'code' attribute, which
corresponds to the error sent by the server.
Error Codes
@ -303,7 +304,7 @@ dictionary is reproduced here for convenience ::
}
When an error is raised the server responds by returning an HTTP error code
*and* an error page. You can use the ``HTTPError`` instance as a response on the
*and* an error page. You can use the :exc:`HTTPError` instance as a response on the
page returned. This means that as well as the code attribute, it also has read,
geturl, and info, methods. ::
@ -325,7 +326,7 @@ geturl, and info, methods. ::
Wrapping it Up
--------------
So if you want to be prepared for ``HTTPError`` *or* ``URLError`` there are two
So if you want to be prepared for :exc:`HTTPError` *or* :exc:`URLError` there are two
basic approaches. I prefer the second approach.
Number 1
@ -351,7 +352,7 @@ Number 1
.. note::
The ``except HTTPError`` *must* come first, otherwise ``except URLError``
will *also* catch an ``HTTPError``.
will *also* catch an :exc:`HTTPError`.
Number 2
~~~~~~~~
@ -376,8 +377,8 @@ Number 2
info and geturl
===============
The response returned by urlopen (or the ``HTTPError`` instance) has two useful
methods ``info`` and ``geturl``.
The response returned by urlopen (or the :exc:`HTTPError` instance) has two useful
methods :meth:`info` and :meth:`geturl`.
**geturl** - this returns the real URL of the page fetched. This is useful
because ``urlopen`` (or the opener object used) may have followed a