Updates:
Cc: ronan.l...@gmail.com
Comment #9 on issue 1233 by asmeurer: fix the rest of jython bugs
http://code.google.com/p/sympy/issues/detail?id=1233
Nowadays, if you try to import sympy in Jython, you get:
Traceback (most recent call last):
File "./bin/test", line 17, in <module>
from sympy.utilities.runtests import test
File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/__init__.py",
line 30, in <module>
from sympy.core import *
File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/__init__.py",
line 8, in <module>
from expr import Expr, AtomicExpr
File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py",
line 1826, in <module>
class AtomicExpr(Atom, Expr):
TypeError: Error when calling the metaclass bases
multiple bases have instance lay-out conflict
I bisected this to the commit:
commit 0362747e5f433f904dc446a0e3032503b7aa3fe3
Author: Ronan Lamy <ronan.l...@normalesup.org>
Date: Tue Apr 6 04:30:49 2010 +0100
add __slots__
diff --git a/sympy/core/basic.py b/sympy/core/basic.py
index 4758270..43e8373 100644
--- a/sympy/core/basic.py
+++ b/sympy/core/basic.py
@@ -1622,6 +1622,9 @@ def __call__(self, subsdict):
class EvalfMixin(object):
"""Mixin class adding evalf capabililty."""
+
+ __slots__ = []
+
def _evalf(self, prec):
"""Helper for evalf. Does the same thing but takes binary
precision"""
r = self._eval_evalf(prec)
@@ -1662,6 +1665,8 @@ def _to_mpmath(self, prec, allow_ints=True):
return mpmath.make_mpc((re, im))
class Expr(Basic, EvalfMixin):
+ __slots__ = []
+
def __float__(self):
result = self.evalf()
if result.is_Number:
--
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