polyerrors.py 文件源码

def __str__(self):
        if self.domain.is_EX:
            msg = "You may want to use a different simplification algorithm. Note " \
                  "that in general it's not possible to guarantee to detect zero "  \
                  "in this domain."
        elif not self.domain.is_Exact:
            msg = "Your working precision or tolerance of computations may be set " \
                  "improperly. Adjust those parameters of the coefficient domain "  \
                  "and try again."
        else:
            msg = "Zero detection is guaranteed in this coefficient domain. This "  \
                  "may indicate a bug in SymPy or the domain is user defined and "  \
                  "doesn't implement zero detection properly."

        return "couldn't reduce degree in a polynomial division algorithm when "    \
               "dividing %s by %s. This can happen when it's not possible to "      \
               "detect zero in the coefficient domain. The domain of computation "  \
               "is %s. %s" % (self.f, self.g, self.domain, msg)