Trying to figure out the data type from the code snippet

[Chupo]

In article <mailman.465.1548967170.4816.python-list at python.org>, Chris 
Angelico <rosuav at gmail.com> says...
> Ah okay. You may want to killfile a few people then, since you're
> using an actual real newsreader and have that capability.
> 

Yes, Gravity has Bozo Bin for that purpose :-) But although I've been 
using newsgroups for 20 years I've never blocked a single person by 
using a filter because it is not hard to just not open certain messages 
posted by known authors. Especially nowadays when post count is so low.
-- 
Let There Be Light
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Chupo