`!urllib.error` --- Exception classes raised by urllib.request
urllib.error
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:
URLError
The handlers raise this exception (or derived exceptions) when they run into a problem. It is a subclass of OSError.
reason
The reason for this error. It can be a message string or another exception instance.
3.3 URLError used to be a subtype of IOError, which is now an alias of OSError.
HTTPError(url, code, msg, hdrs, fp)
Though being an exception (a subclass of URLError), an HTTPError can also function as a non-exceptional file-like return value (the same thing that ~urllib.request.urlopen returns). This is useful when handling exotic HTTP errors, such as requests for authentication.
url
Contains the request URL. An alias for filename attribute.
code
An HTTP status code as defined in 2616. This numeric value corresponds to a value found in the dictionary of codes as found in http.server.BaseHTTPRequestHandler.responses.
reason
This is usually a string explaining the reason for this error. An alias for msg attribute.
headers
The HTTP response headers for the HTTP request that caused the HTTPError. An alias for hdrs attribute.
3.4
fp
A file-like object where the HTTP error body can be read from.
ContentTooShortError(msg, content)
This exception is raised when the ~urllib.request.urlretrieve function detects that the amount of the downloaded data is less than the expected amount (given by the Content-Length header).
content
The downloaded (and supposedly truncated) data.
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