urllib.error — Exception classes raised by urllib.request
Source code: Lib/urllib/error.py
The urllib.error
module defines the exception classes for exceptions raised by urllib.request
. The base exception class is URLError
.
The following exceptions are raised by urllib.error
as appropriate:
-
exception
urllib.error.
URLError
-
The handlers raise this exception (or derived exceptions) when they run into a problem. It is a subclass of
OSError
.
-
exception
urllib.error.
HTTPError
-
Though being an exception (a subclass of
URLError
), anHTTPError
can also function as a non-exceptional file-like return value (the same thing thaturlopen()
returns). This is useful when handling exotic HTTP errors, such as requests for authentication.-
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
http.server.BaseHTTPRequestHandler.responses
.
-
headers
-
The HTTP response headers for the HTTP request that caused the
HTTPError
.New in version 3.4.
-
-
exception
urllib.error.
ContentTooShortError
( msg, content ) -
This exception is raised when the
urlretrieve()
function detects that the amount of the downloaded data is less than the expected amount (given by the Content-Length header). Thecontent
attribute stores the downloaded (and supposedly truncated) data.