Re: Internet Data Handling » mailbox

[MRAB]

On 2016-10-22 03:43, Adam Jensen wrote:
> The mailbox library documentation seems to be a little weak. In this
> example:
>
> https://docs.python.org/2.7/library/mailbox.html#examples
>
> import mailbox
> for message in mailbox.mbox('~/mbox'):
>     subject = message['subject']       # Could possibly be None.
>     if subject and 'python' in subject.lower():
>         print subject
>
> What is the structure of "message"? I guess it's a dictionary but what
> is its structure? What are the keys? Is the structure constant or does
> it change depending upon the content of the mbox?
>
> I'm a bit new to python documentation. How would a potential user of the
> "mailbox" library determine these things? Or did I miss something?
>
The docs say that it's subclass of the email.message module's Message.

You can get the email's header fields like it's a dict, except that the 
field names are case-insensitive. The author(s) of the module couldn't 
use a true dict because of the need for additional functionality.