(f, l, K)
return f
Return a multivariate value nested ``l``-levels.

    Examples
    ========

    >>> from sympy.polys.domains import ZZ
    >>> from sympy.polys.densebasic import dmp_nest

    >>> dmp_nest([[ZZ(1)]], 2, ZZ)
    [[[[1]]]]
Return a multivariate value nested ``l``-levels.
Return a multivariate value nested l - levels .
def dmp_nest(f, l, K):
    """
    Return a multivariate value nested ``l``-levels.

    Examples
    ========

    >>> from sympy.polys.domains import ZZ
    >>> from sympy.polys.densebasic import dmp_nest

    >>> dmp_nest([[ZZ(1)]], 2, ZZ)
    [[[[1]]]]

    """
    if not isinstance(f, list):
        return dmp_ground(f, l)

    for i in xrange(l):
        f = [f]

    return f
def dmp_nest ( f , l , K ) : if not isinstance ( f , list ) : return dmp_ground ( f , l ) for i in xrange ( l ) : f = [ f ] return f