| | """Exception classes raised by urllib. |
| | |
| | The base exception class is URLError, which inherits from OSError. It |
| | doesn't define any behavior of its own, but is the base class for all |
| | exceptions defined in this package. |
| | |
| | HTTPError is an exception class that is also a valid HTTP response |
| | instance. It behaves this way because HTTP protocol errors are valid |
| | responses, with a status code, headers, and a body. In some contexts, |
| | an application may want to handle an exception like a regular |
| | response. |
| | """ |
| | import io |
| | import urllib.response |
| |
|
| | __all__ = ['URLError', 'HTTPError', 'ContentTooShortError'] |
| |
|
| |
|
| | class URLError(OSError): |
| | |
| | |
| | |
| | |
| | |
| | def __init__(self, reason, filename=None): |
| | self.args = reason, |
| | self.reason = reason |
| | if filename is not None: |
| | self.filename = filename |
| |
|
| | def __str__(self): |
| | return '<urlopen error %s>' % self.reason |
| |
|
| |
|
| | class HTTPError(URLError, urllib.response.addinfourl): |
| | """Raised when HTTP error occurs, but also acts like non-error return""" |
| | __super_init = urllib.response.addinfourl.__init__ |
| |
|
| | def __init__(self, url, code, msg, hdrs, fp): |
| | self.code = code |
| | self.msg = msg |
| | self.hdrs = hdrs |
| | self.fp = fp |
| | self.filename = url |
| | if fp is None: |
| | fp = io.BytesIO() |
| | self.__super_init(fp, hdrs, url, code) |
| |
|
| | def __str__(self): |
| | return 'HTTP Error %s: %s' % (self.code, self.msg) |
| |
|
| | def __repr__(self): |
| | return '<HTTPError %s: %r>' % (self.code, self.msg) |
| |
|
| | |
| | |
| | @property |
| | def reason(self): |
| | return self.msg |
| |
|
| | @property |
| | def headers(self): |
| | return self.hdrs |
| |
|
| | @headers.setter |
| | def headers(self, headers): |
| | self.hdrs = headers |
| |
|
| |
|
| | class ContentTooShortError(URLError): |
| | """Exception raised when downloaded size does not match content-length.""" |
| | def __init__(self, message, content): |
| | URLError.__init__(self, message) |
| | self.content = content |
| |
|