Message7174

Actually only DeprecationWarnings, ImportWarnings and PendingDeprecationWarnings do not work:

$ jython2.7 -Wdefault
>>> import __builtin__, warnings
>>> for name in dir(__builtin__):
...   if name.endswith("Warning"):
...     print(name)
...     warnings.warn("Some warning", getattr(__builtin__, name))
... 
BytesWarning
__main__:4: BytesWarning: Some warning
DeprecationWarning
FutureWarning
__main__:4: FutureWarning: Some warning
ImportWarning
PendingDeprecationWarning
RuntimeWarning
__main__:4: RuntimeWarning: Some warning
SyntaxWarning
__main__:4: SyntaxWarning: Some warning
UnicodeWarning
__main__:4: UnicodeWarning: Some warning
UserWarning
__main__:4: UserWarning: Some warning
Warning
__main__:4: Warning: Some warning
>>>