[Python-Dev] Dictionary evaluation order

Finn Bock bckfnn@worldonline.dk
Tue, 26 Nov 2002 12:14:31 +0100

[Gustavo Niemeyer]

>>I was just looking at the bug
>>    [#448679] Left to right
>>It mentions that code like that
>>    {f1():f2(), f3():f4()}
>>Will call these functions in the order f2, f1, f4, f3. What should we
>>do about it? Tim mentions that "When [Tim] asked Guido about that
>>some years ago, he agreed it was a bug.". Is it too late to fix it, or
>>is it still a desirable fix?

[Guido van Rossum]

> ...
 > What does Jython do?

Jython happens to evaluate in order of f1, f2, f3, f4. An accident, I'm 
sure, of the way the dictionary constructor is called with a sequence of 
(key, value, key, value, ...).