Using the latest version of BT3-Flat, a article which contains code doesn't show syntax highlighting.
Example article snippet.
I’ll give you a hint
empty_record = EMPTY_INDEX_RECORD
Print(EMPTY_INDEX_RECORD)
# prints {"dates":[], "files_to_ignore":{}} on
# the first function call.
empty_record = EMPTY_INDEX_RECORD
Print(EMPTY_INDEX_RECORD)
# prints {"dates":[], "files_to_ignore":{“9”:
# “test”}} on the second function call.