def force_get_input(self, port_name, default_value=None):

        if self.has_input(port_name):
            return self.get_input(port_name)
        else:
            return default_value
Return ``True`` if ``f`` is a square-free polynomial in ``K[x]``.
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/core/modules/vistrails_module.py/Module.force_get_input--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/polys/sqfreetools.py/dup_sqf_p