Once all fields are set, calling encode() will return a byte buffer
containing the correctly formatted FIX message, with fields in the required
order, and automatically added and set values for the BodyLength (9) and
Checksum (10) fields.
byte_buffer = message.encode()Note that if you want to manually control the ordering of all fields, or
the value of the BodyLength (9) or Checksum (10) fields, there's a 'raw'
flag to the encode() method that disables the default automatic
functionality.
byte_buffer = message.encode(True)This is primarily useful for creating known-bad messages for testing purposes.