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A method to produce a Permutation object from a list;
the list is bound to the _array_form attribute, so it must
not be modified; this method is meant for internal use only;
the list ``a`` is supposed to be generated as a temporary value
in a method, so p = Perm._af_new(a) is the only object
to hold a reference to ``a``::

Examples
========
(more...)

            @staticmethod
    def _af_new(perm):
        """A method to produce a Permutation object from a list;
        the list is bound to the _array_form attribute, so it must
        not be modified; this method is meant for internal use only;
        the list ``a`` is supposed to be generated as a temporary value
        in a method, so p = Perm._af_new(a) is the only object
        to hold a reference to ``a``::

        Examples
        ========

        >>> from sympy.combinatorics.permutations import Perm
        >>> Perm.print_cyclic = False
        >>> a = [2,1,3,0]
        >>> p = Perm._af_new(a)
        >>> p
        Permutation([2, 1, 3, 0])

        """
        p = Basic.__new__(Perm, perm)
        p._array_form = perm
        p._size = len(perm)
        return p
        


src/s/y/sympy-HEAD/sympy/combinatorics/testutil.py   sympy(Download)
            for element in elements:
                if commutes_with_gens(element):
                    centralizer_list.append(Permutation._af_new(element))
        else:
            for element in elements:

src/s/y/sympy-0.7.5/sympy/combinatorics/testutil.py   sympy(Download)
            for element in elements:
                if commutes_with_gens(element):
                    centralizer_list.append(Permutation._af_new(element))
        else:
            for element in elements: