def bg_repeat(value):
  if value == 'no-repeat':
    return value
  return ''
Rewrite a polynomial in terms of elementary symmetric polynomials.
dataset/ETHPy150Open CollabQ/CollabQ/common/clean.py/bg_repeat--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/polys/polyfuncs.py/symmetrize