Steven D'Aprano <st...@remove-this-cybersource.com.au> writes: > def foo(self, x, y=None): > if y is None: > y = self.a > > I don't find that clumsy in the least. I find it perfectly readable and a > standard idiom.
That has the same problem as the earlier version. If the person
passes None, they get self.a. I prefer:
sentinel = object()
...
def foo(x, y=sentinel):
if y is sentinel:
y = self.a
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