Deprecated since release 2.3.
package should be used in preference to the rfc822
module is present only to maintain backward compatibility.
This module defines a class, Message, which represents an ``email
message'' as defined by the Internet standard RFC 2822.12.5 Such messages consist of a collection of message
headers, and a message body. This module also defines a helper class AddressList
for parsing RFC
2822 addresses. Please refer to the RFC for information on the specific syntax of RFC 2822
module provides classes to read mailboxes produced by various end-user mail programs.
- A Message instance is instantiated with an input object as
parameter. Message relies only on the input object having a readline()
method; in particular, ordinary file objects qualify. Instantiation reads headers from the
input object up to a delimiter line (normally a blank line) and stores them in the
instance. The message body, following the headers, is not consumed.
This class can work with any input object that supports a readline()
method. If the input object has seek and tell capability, the rewindbody()
method will work; also, illegal lines will be pushed back onto the input stream. If the
input object lacks seek but has an unread() method that can push
back a line of input, Message will use that to push back illegal
lines. Thus this class can be used to parse messages coming from a buffered stream.
The optional seekable argument is provided as a workaround for certain stdio
libraries in which tell() discards buffered data before
discovering that the lseek() system call doesn't work. For
maximum portability, you should set the seekable argument to zero to prevent that initial tell() when passing in an unseekable object such as a file object
created from a socket object.
Input lines as read from the file may either be terminated by CR-LF or by a single
linefeed; a terminating CR-LF is replaced by a single linefeed before the line is stored.
All header matching is done independent of upper or lower case; e.g.
m['FROM'] all yield the same
- You may instantiate the AddressList helper class using a single
string parameter, a comma-separated list of RFC 2822 addresses to be parsed. (The
None yields an empty list.)
- Return a new string with backslashes in str replaced by two backslashes and
double quotes replaced by backslash-double quote.
- Return a new string which is an unquoted version of str. If str
ends and begins with double quotes, they are stripped off. Likewise if str ends
and begins with angle brackets, they are stripped off.
- Parse address, which should be the value of some address-containing field
such as or , into
its constituent ``realname'' and ``email address'' parts. Returns a tuple of that
information, unless the parse fails, in which case a 2-tuple
(None, None) is
- The inverse of parseaddr(), this takes a 2-tuple of the form
email_address) and returns the string value suitable for a or header. If the first
element of pair is false, then the second element is returned unmodified.
- Attempts to parse a date according to the rules in RFC 2822. however, some mailers don't
follow that format as specified, so parsedate() tries to guess
correctly in such cases. date is a string containing an RFC 2822 date, such as
20 Nov 1995 19:12:08 -0500'. If it succeeds in parsing the date, parsedate() returns a 9-tuple that can be passed directly to time.mktime(); otherwise
None will be returned. Note
that fields 6, 7, and 8 of the result tuple are not usable.
- Performs the same function as parsedate(), but returns either
or a 10-tuple; the first 9 elements make up a tuple that can be passed directly to time.mktime(), and the tenth is the offset of the date's timezone
from UTC (which is the official term for Greenwich Mean Time). (Note that the sign of the
timezone offset is the opposite of the sign of the
time.timezone variable for
the same timezone; the latter variable follows the POSIX standard while this module
2822.) If the input string has no timezone, the last element of the tuple returned is
Note that fields 6, 7, and 8 of the result tuple are not usable.
- Turn a 10-tuple as returned by parsedate_tz() into a UTC
timestamp. If the timezone item in the tuple is
None, assume local time.
Minor deficiency: this first interprets the first 8 elements as a local time and then
compensates for the timezone difference; this may yield a slight error around daylight
savings time switch dates. Not enough to worry about for common use.
- Module email:
- Comprehensive email handling package; supercedes the rfc822
- Module mailbox:
- Classes to read various mailbox formats produced by end-user mail programs.
- Module mimetools:
- Subclass of rfc822.Message that handles MIME encoded messages.
- This module originally conformed to RFC 822, hence the name. Since then, RFC 2822
has been released as an update to RFC 822. This module should be considered RFC 2822-conformant,
especially in cases where the syntax or semantics have changed since RFC 822.