urllib.error — Exception classes raised by urllib.request¶
Source code: Lib/urllib/error.py
urllib.error module defines the exception classes for exceptions
urllib.request. The base exception class is
The following exceptions are raised by
urllib.error as appropriate:
The handlers raise this exception (or derived exceptions) when they run into a problem. It is a subclass of
The reason for this error. It can be a message string or another exception instance.
Though being an exception (a subclass of
HTTPErrorcan also function as a non-exceptional file-like return value (the same thing that
urlopen()returns). This is useful when handling exotic HTTP errors, such as requests for authentication.
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
This is usually a string explaining the reason for this error.
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). The
contentattribute stores the downloaded (and supposedly truncated) data.