When
from __future__ import runtime_default_kwargs
Is run,
def a(b=1, c=b+2, d=[]):
pass
behaves as (if the peephole optimizer didn’t exist)
def a(b=None, c=None):
if b is None:
b = 1
if c is None:
c = b + 2
if d is None:
d = []
i.e. the keyword expression is evaluated at runtime.
Perhaps a restriction on “literals only” can be made so people don’t abuse this._______________________________________________
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