unlock() Three locking mechanisms are used—dot locking and, if available, the flock() and lockf()

popitem() Return an arbitrary (key, message) pair, where key is a key and message is a message

header_source_parse(sourcelines) The name is parsed as everything up to the ‘:‘ and returned unmodified. The value

binascii.a2b_uu(string) Convert a single line of uuencoded data back to binary and return the binary data. Lines normally contain

class email.contentmanager.ContentManager Base class for content managers. Provides the standard registry mechanisms to register

binascii.crc_hqx(data, value) Compute the binhex4 crc value of data, starting with value as the initial crc

clear() Remove the payload and all of the headers.

get_filename(failobj=None) Return the value of the filename parameter of the Content-Disposition

class email.generator.Generator(outfp, mangle_from_=True, maxheaderlen=78, *, policy=None) The constructor for the Generator

set_visible(visible) Set the message’s visible headers to be the same as the headers in message. Parameter visible