diff options
Diffstat (limited to 'Doc/library/email.errors.rst')
| -rw-r--r-- | Doc/library/email.errors.rst | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/Doc/library/email.errors.rst b/Doc/library/email.errors.rst index 8470783e81..2d0d1923cd 100644 --- a/Doc/library/email.errors.rst +++ b/Doc/library/email.errors.rst @@ -20,33 +20,27 @@ The following exception classes are defined in the :mod:`email.errors` module: .. exception:: MessageParseError() - This is the base class for exceptions raised by the :class:`~email.parser.Parser` - class. It is derived from :exc:`MessageError`. + This is the base class for exceptions raised by the + :class:`~email.parser.Parser` class. It is derived from + :exc:`MessageError`. This class is also used internally by the parser used + by :mod:`~email.headerregistry`. .. exception:: HeaderParseError() - Raised under some error conditions when parsing the :rfc:`2822` headers of a - message, this class is derived from :exc:`MessageParseError`. It can be raised - from the :meth:`Parser.parse <email.parser.Parser.parse>` or - :meth:`Parser.parsestr <email.parser.Parser.parsestr>` methods. - - Situations where it can be raised include finding an envelope header after the - first :rfc:`2822` header of the message, finding a continuation line before the - first :rfc:`2822` header is found, or finding a line in the headers which is - neither a header or a continuation line. + Raised under some error conditions when parsing the :rfc:`5322` headers of a + message, this class is derived from :exc:`MessageParseError`. The + :meth:`~email.message.EmailMessage.set_boundary` method will raise this + error if the content type is unknown when the method is called. + :class:`~email.header.Header` may raise this error for certain base64 + decoding errors, and when an attempt is made to create a header that appears + to contain an embedded header (that is, there is what is supposed to be a + continuation line that has no leading whitespace and looks like a header). .. exception:: BoundaryError() - Raised under some error conditions when parsing the :rfc:`2822` headers of a - message, this class is derived from :exc:`MessageParseError`. It can be raised - from the :meth:`Parser.parse <email.parser.Parser.parse>` or - :meth:`Parser.parsestr <email.parser.Parser.parsestr>` methods. - - Situations where it can be raised include not being able to find the starting or - terminating boundary in a :mimetype:`multipart/\*` message when strict parsing - is used. + Deprecated and no longer used. .. exception:: MultipartConversionError() @@ -64,14 +58,14 @@ The following exception classes are defined in the :mod:`email.errors` module: :class:`~email.mime.nonmultipart.MIMENonMultipart` (e.g. :class:`~email.mime.image.MIMEImage`). -Here's the list of the defects that the :class:`~email.parser.FeedParser` + +Here is the list of the defects that the :class:`~email.parser.FeedParser` can find while parsing messages. Note that the defects are added to the message where the problem was found, so for example, if a message nested inside a :mimetype:`multipart/alternative` had a malformed header, that nested message object would have a defect, but the containing messages would not. -All defect classes are subclassed from :class:`email.errors.MessageDefect`, but -this class is *not* an exception! +All defect classes are subclassed from :class:`email.errors.MessageDefect`. * :class:`NoBoundaryInMultipartDefect` -- A message claimed to be a multipart, but had no :mimetype:`boundary` parameter. |