Issue1828

classification
Title: Problems inheriting from long
Type: Severity: normal
Components: Versions:
process
Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: pjenvey Nosy List: pekka.klarck, pjenvey
Priority: Keywords:

Created on 2011-12-14.12:20:23 by pekka.klarck, last changed 2011-12-16.12:58:58 by pekka.klarck.

Messages
msg6743 (view) Author: Pekka Klärck (pekka.klarck) Date: 2011-12-14.12:20:22
There are some problems when inheriting from Jython. What I've noticed is that Jython adds 'L' at the end of the string representation and crashes for bool().

To reproduce:

1) Assume we have a file with this content:

    class X(long):
        pass

    print 42, X(42)
    print bool(42), bool(X(42))


2) Run with Python (tested with 2.5-2.7):

    42 42
    True True


3) Run with Jython (tested with 2.5.1 and 2.5.2):

    42 42L
    True
    Traceback (most recent call last):
      File "test.py", line 6, in <module>
        print bool(42), bool(X(42))
    RuntimeError: maximum recursion depth exceeded
msg6744 (view) Author: Philip Jenvey (pjenvey) Date: 2011-12-16.00:20:53
fixed in 68626d94a76d and 825546a4600e, thanks Pekka!
msg6745 (view) Author: Pekka Klärck (pekka.klarck) Date: 2011-12-16.12:58:57
Great to see issues fixed so fast!

If someone is interested, it's possible to workaround the problems also with the currently releases 2.5 versions so that the code is compatible with CPython:

    class X(long):
        def __str__(self):
            return long.__str__(self).rstrip('L')
        def __nonzero__(self):
            return bool(long(self))
History
Date User Action Args
2011-12-16 12:58:58pekka.klarcksetmessages: + msg6745
2011-12-16 00:20:59pjenveysetstatus: open -> closed
resolution: fixed
2011-12-16 00:20:53pjenveysetmessages: + msg6744
2011-12-16 00:12:11pjenveysetassignee: pjenvey
nosy: + pjenvey
2011-12-14 12:20:23pekka.klarckcreate