penelope | converting dictionaries , especially for eReader devices

The From: header should indeed be RFC2047-encoded, and the documentation suggests that it will be "when the message is serialized". When you print(msg) you are not properly serializing it; you want print(msg.as_string()) which does exhibit the required serialization.

When it comes to the transfer encoding, Python's email library has an unattractive penchant for using base64 for content which could very well be encoded as quoted-printable instead. You can't really reliably send the content completely unencoded (though if you wanted to, the MIME 8bit or binary encodings would be able to accommodate that; but for backwards compatibility, SMTP requires everything to be encoded into a 7-bit representation).

In the old email library, various shenanigans were required to do this, but in the new EmailMessage API introduced in Python 3.6, you really only have to add cte='quoted-printable' to the set_content call.

But if you want to do it anyway you should do:

• $lookup to join collections. I have started form Flim collection
• $unwind to deconstruct the array
• $group to reconstruct the array that we already deconstructed, this will
• Since we have nested array we need to use $map to loop over them to collect the first name and lastname
• The above stage will end up with again nested array, so we use $reduce to loop again and remove inner arrays using $setUnion

remove some duplicate entries, depends on your requirements

Here is the code

Apparently you are supposed to use a priority queue.

1. Write a tiny program that makes a priority queue and stores strings into it, then prints them out.
2. Define a class and store instances of that class into the priority queue instead of strings.
3. Modify the sort criteria on the priority queue and notice that the printed sequence changes according to the sort criteria.
4. Write a function that creates one class instance with random values.
5. Write a function that creates all 100 class instances.
6. Declare victory.