Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1511 by Toon.Verstraelen: weird error with evalf
http://code.google.com/p/sympy/issues/detail?id=1511
t...@molmod22 ~> isympy
Python 2.5.2 console for SymPy 0.6.5.beta3-git
These commands were executed:
>>> from __future__ import division
>>> from sympy import *
>>> x, y, z = symbols('xyz')
>>> k, m, n = symbols('kmn', integer=True)
>>> f, g, h = map(Function, 'fgh')
Documentation can be found at http://sympy.org/
In [1]: N(pi, 25)
Out[1]: 3.141592653589793238462643
In [2]: N(E, 25)
Out[2]: 2.718281828459045235360287
In [3]: N(x + pi, 25)
Out[3]: 3.141592653589793238462643 + x
In [4]: N(x + E, 25)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
/home/toon/<ipython console> in <module>()
/home/toon/lib/python/sympy/core/evalf.pyc in N(x, n, **options)
1050 >>> N(Sum(1/k**k, (k, 1, oo)), 4)
1051 1.291
1052
1053 """
-> 1054 return sympify(x).evalf(n, **options)
/home/toon/lib/python/sympy/core/evalf.pyc in Basic_evalf(x, n, **options)
1011 except NotImplementedError:
1012 # Fall back to the ordinary evalf
-> 1013 v = x._eval_evalf(prec)
1014 if v is None:
1015 return x
/home/toon/lib/python/sympy/core/basic.pyc in _seq_eval_evalf(self, prec)
1983
1984 def _seq_eval_evalf(self, prec):
-> 1985 return self.__class__(*[s._evalf(prec) for s in self.args])
1986
1987 def _to_mpmath(self, prec, allow_ints=True):
/home/toon/lib/python/sympy/core/basic.pyc in _evalf(self, prec)
1974 def _evalf(self, prec):
1975 """Helper for evalf. Does the same thing but takes binary
precision"""
-> 1976 r = self._eval_evalf(prec)
1977 if r is None:
1978 r = self
/home/toon/lib/python/sympy/core/numbers.pyc in _eval_evalf(self, prec)
1329
1330 def _eval_evalf(self, prec):
-> 1331 return Real._new(self._as_mpf_val(prec), prec)
1332
1333 def _eval_derivative(self, s):
/home/toon/lib/python/sympy/core/numbers.pyc in _as_mpf_val(self, prec)
1401
1402 def _as_mpf_val(self, prec):
-> 1403 return mlib.fe(prec)
1404
1405 def approximation_interval(self, number_cls):
AttributeError: 'module' object has no attribute 'fe'
In [5]:
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