Iterators — Python v2.7 documentation (original) (raw)

18.1.10. email: Iterators¶

Iterating over a message object tree is fairly easy with theMessage.walk() method. The email.iterators module provides some useful higher level iterations over message object trees.

email.iterators.body_line_iterator(_msg_[, _decode_])¶

This iterates over all the payloads in all the subparts of msg, returning the string payloads line-by-line. It skips over all the subpart headers, and it skips over any subpart with a payload that isn’t a Python string. This is somewhat equivalent to reading the flat text representation of the message from a file using readline(), skipping over all the intervening headers.

Optional decode is passed through to Message.get_payload().

email.iterators.typed_subpart_iterator(_msg_[, _maintype_[, _subtype_]])¶

This iterates over all the subparts of msg, returning only those subparts that match the MIME type specified by maintype and subtype.

Note that subtype is optional; if omitted, then subpart MIME type matching is done only with the main type. maintype is optional too; it defaults to_text_.

Thus, by default typed_subpart_iterator() returns each subpart that has a MIME type of text/*.

The following function has been added as a useful debugging tool. It should_not_ be considered part of the supported public interface for the package.

email.iterators._structure(_msg_[, _fp_[, _level_]])¶

Prints an indented representation of the content types of the message object structure. For example:

msg = email.message_from_file(somefile) _structure(msg) multipart/mixed text/plain text/plain multipart/digest message/rfc822 text/plain message/rfc822 text/plain message/rfc822 text/plain message/rfc822 text/plain message/rfc822 text/plain text/plain

Optional fp is a file-like object to print the output to. It must be suitable for Python’s extended print statement. level is used internally.