In my class I have _latex and _sympystr. Your latex() function uses my _latex but str() does not use _sympystr I have to define __str__() in my class to print correctly. How should I use _sympystr to return the correct string.
def _sympystr(self,printer): if self.order == 0: return 'D{}' s = 'D' for x in self.pdiffs: s += '{' + printer._print(x) + '}' n = self.pdiffs[x] if n > 1: s += '^' + printer._print(n) return s def _latex(self,printer): if self.order == 0: return '' s = r'\frac{\partial' if self.order > 1: s += '^{' + printer._print(self.order) + '}' s += '}{' keys = list(self.pdiffs.keys()) keys.sort(key=lambda x: x.sort_key()) for key in keys: i = self.pdiffs[key] s += r'\partial ' + printer._print(key) if i > 1: s += '^{' + printer._print(i) + '}' s += '}' return s -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/3681a732-62ca-4169-84ea-291b92dccef4n%40googlegroups.com.