@property
    def top_margin(self):
        pgMar = self.pgMar
        if pgMar is None:
            return None
        return pgMar.top
Generate Viete's formulas for ``f``.
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/section.py/CT_SectPr.top_margin--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/polys/polyfuncs.py/viete