Message12954

On closer inspection, we're good on this already (in 2.7.2). The REPL uses repr(), so you see None, but Java toString() tells a different story.

>>> m.toString()
u'{0=null, a=hello, 1=null, class org.python.core.PyInteger=42}'

It was probably fixed in the course of https://hg.python.org/jython/rev/65c4b774a715 . I'll check to see this works everywhere it should. JavaProxyMap and test_dict_jy, look fairly comprehensive, and the test seems to know which types don't support null. Ok, I found a typo ... .

JavaProxySet has not had the same scrub (e.g. improved repr), but doesn't appear to suffer this problem (e.g add and update are consistent in storing a null).