Status: New
Owner: ----
Labels: Type-Defect Priority-Critical

New issue 3797 by buratin....@gmail.com: stirling function can't be imported
http://code.google.com/p/sympy/issues/detail?id=3797

from sympy.functions.combinatorial.numbers import stirling
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name stirling

I tried it both in my console and live console - stirling example on the site generetes the same error:

Python console for SymPy 0.7.2 (Python 2.5.2)

These commands were executed:
from __future__ import division
from sympy import *
x, y, z, t = symbols('x y z t')
k, m, n = symbols('k m n', integer=True)
f, g, h = symbols('f g h', cls=Function)

from sympy.functions.combinatorial.numbers import stirling, bell
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name stirling
from sympy.combinatorics import Permutation
from sympy.utilities.iterables import multiset_partitions, permutations
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name permutations

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