Message10004

I didn't really see the bug-fix as an "API change". But I'll add that as it could conceivably bite a user. We're not close to running out of integers yet.

Playing with this, if having ensured my *$py.class files are old, then I hide the source x.py, the old Jython (API version matches x$py.class) runs, with the expected wrong result, while the new Jython (API version one up from x$py.class) says:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named x

rather than anything more nuanced about what really happened.

In comparable circumstances, CPython says:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: Bad magic number in u\v\w\x.pyc

although I suppose that could be put better too.