(self, elem, M=None)
Convert ``elem`` into the internal representation.

        This method is called implicitly whenever computations involve elements
        not in the internal representation.

        >>> from sympy.abc import x
        >>> from sympy import QQ
        >>> F = QQ.old_poly_ring(x).free_module(2)
        >>> F.convert([1, 0])
        [1, 0]
Convert ``elem`` into the internal representation.
Convert elem into the internal representation .
def convert(self, elem, M=None):
        """
        Convert ``elem`` into the internal representation.

        This method is called implicitly whenever computations involve elements
        not in the internal representation.

        >>> from sympy.abc import x
        >>> from sympy import QQ
        >>> F = QQ.old_poly_ring(x).free_module(2)
        >>> F.convert([1, 0])
        [1, 0]
        """
        if isinstance(elem, FreeModuleElement):
            if elem.module is self:
                return elem
            if elem.module.rank != self.rank:
                raise CoercionFailed
            return FreeModuleElement(self,
                     tuple(self.ring.convert(x, elem.module.ring) for x in elem.data))
        elif iterable(elem):
            tpl = tuple(self.ring.convert(x) for x in elem)
            if len(tpl) != self.rank:
                raise CoercionFailed
            return FreeModuleElement(self, tpl)
        elif elem is 0:
            return FreeModuleElement(self, (self.ring.convert(0),)*self.rank)
        else:
            raise CoercionFailed
def convert ( self , elem , M = None ) : if isinstance ( elem , FreeModuleElement ) : if elem . module is self : return elem if elem . module . rank != self . rank : raise CoercionFailed return FreeModuleElement ( self , tuple ( self . ring . convert ( x , elem . module . ring ) for x in elem . data ) ) elif iterable ( elem ) : tpl = tuple ( self . ring . convert ( x ) for x in elem ) if len ( tpl ) != self . rank : raise CoercionFailed return FreeModuleElement ( self , tpl ) elif elem is 0 : return FreeModuleElement ( self , ( self . ring . convert ( 0 ) , ) * self . rank ) else : raise CoercionFailed