mirror of https://github.com/python/cpython
80 lines
2.4 KiB
ReStructuredText
80 lines
2.4 KiB
ReStructuredText
:mod:`!urllib.error` --- Exception classes raised by urllib.request
|
|
===================================================================
|
|
|
|
.. module:: urllib.error
|
|
:synopsis: Exception classes raised by urllib.request.
|
|
|
|
.. moduleauthor:: Jeremy Hylton <jeremy@alum.mit.edu>
|
|
.. sectionauthor:: Senthil Kumaran <orsenthil@gmail.com>
|
|
|
|
**Source code:** :source:`Lib/urllib/error.py`
|
|
|
|
--------------
|
|
|
|
The :mod:`urllib.error` module defines the exception classes for exceptions
|
|
raised by :mod:`urllib.request`. The base exception class is :exc:`URLError`.
|
|
|
|
The following exceptions are raised by :mod:`urllib.error` as appropriate:
|
|
|
|
.. exception:: URLError
|
|
|
|
The handlers raise this exception (or derived exceptions) when they run into
|
|
a problem. It is a subclass of :exc:`OSError`.
|
|
|
|
.. attribute:: reason
|
|
|
|
The reason for this error. It can be a message string or another
|
|
exception instance.
|
|
|
|
.. versionchanged:: 3.3
|
|
:exc:`URLError` used to be a subtype of :exc:`IOError`, which is now an
|
|
alias of :exc:`OSError`.
|
|
|
|
|
|
.. exception:: HTTPError(url, code, msg, hdrs, fp)
|
|
|
|
Though being an exception (a subclass of :exc:`URLError`), an
|
|
:exc:`HTTPError` can also function as a non-exceptional file-like return
|
|
value (the same thing that :func:`~urllib.request.urlopen` returns). This
|
|
is useful when handling exotic HTTP errors, such as requests for
|
|
authentication.
|
|
|
|
.. attribute:: url
|
|
|
|
Contains the request URL.
|
|
An alias for *filename* attribute.
|
|
|
|
.. attribute:: code
|
|
|
|
An HTTP status code as defined in :rfc:`2616`. This numeric value corresponds
|
|
to a value found in the dictionary of codes as found in
|
|
:attr:`http.server.BaseHTTPRequestHandler.responses`.
|
|
|
|
.. attribute:: reason
|
|
|
|
This is usually a string explaining the reason for this error.
|
|
An alias for *msg* attribute.
|
|
|
|
.. attribute:: headers
|
|
|
|
The HTTP response headers for the HTTP request that caused the
|
|
:exc:`HTTPError`.
|
|
An alias for *hdrs* attribute.
|
|
|
|
.. versionadded:: 3.4
|
|
|
|
.. attribute:: fp
|
|
|
|
A file-like object where the HTTP error body can be read from.
|
|
|
|
.. exception:: ContentTooShortError(msg, content)
|
|
|
|
This exception is raised when the :func:`~urllib.request.urlretrieve`
|
|
function detects that
|
|
the amount of the downloaded data is less than the expected amount (given by
|
|
the *Content-Length* header).
|
|
|
|
.. attribute:: content
|
|
|
|
The downloaded (and supposedly truncated) data.
|