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12.2.8 Iterators
Iterating over a message object tree is fairly easy with the Message.walk() method. The email.Iterators module provides some useful higher level iterations over message object trees.
- body_line_iterator(msg)
- 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.
- typed_subpart_iterator(msg[, maintype[, subtype]])
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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/*.
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Release 2.2, documentation updated on December 21, 2001.