NEW_FEATURE = "remove_barry_from_BDFL" or
"barry_resign_as_FLUFL"/"barry_resign_as_BDFL";
Add a new future import NEW_FEATURE. This reverts the effects of the future
import "barry_as_FLUFL" easter egg IF it is ever imported. This is absolutely
unnecessary when "barry_as_FLUFL" isn't imported.
There can be optional messages attached to a Barry-related future import:
- When future import NEW_FEATURE is imported and future import "barry_as_FLUFL"
is already imported:
-- "Barry was overthrown from BDFL-ship!" ( friendlier message: "Barry has
resigned from FLUFL-ship."/"Barry has resigned from BDFL-ship." )
- When future import "barry_as_FLUFL" is imported and NEW_FEATURE is already
imported:
-- "Barry has returned as FLUFL." ( or "Barry has returned as BDFL." )
This idea also suggests allowing future imports anywhere in the file as long as
it's Barry-related ( optional feature: only allow a Barry-related future import
IF it is the opposite of the previous Barry-related future import. The opposite
of "no Barry-related future imports yet" is the future import "barry_as_FLUFL" )
Test cases:
>>> from __future__ import barry_resigned_as_FLUFL # no effect
>>> from __future__ import barry_as_FLUFL
>>> 1 <> 2
True
>>> 1 != 2
File "<stdin>", line 1
1 != 2
^^
SyntaxError: with Barry as BDFL, use '<>' instead of '!='
>>> from __future__ import barry_resigned_as_FLUFL
Barry has resigned from BDFL-ship.
>>> 1 <> 2
File "<stdin>", line 1
1 <> 2
^^
SyntaxError: invalid syntax
>>> 1 != 2
True
>>> from __future__ import barry_as_FLUFL
Barry has returned as FLUFL.
>>> 1 != 2
File "<stdin>", line 1
1 != 2
^^
SyntaxError: with Barry as BDFL, use '<>' instead of '!='
>>> 1 <> 2
True
>>> from __future__ import barry_resigned_as_FLUFL
Barry has resigned from BDFL-ship.
>>> 1 != 2
True
>>> 1 <> 2
File "<stdin>", line 1
1 <> 2
^^
SyntaxError: invalid syntax
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