Untitled

class Probe:
    def summ(self,x,y):
        self.summ = x+y
        return self.summ
    
    def umn(self, x,y):
        self.umn = x*y
        self.summ = x*3*y*self.summ
        return self.summ#self.umn
    
    def square(self,x,y):
        self.square = x**y
        return self.square

a = Probe()

print(a.umn(2,3))
print(a.summ(2,3))
print(a.square(2,3))

вывод
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Input In [18], in <cell line: 17>()
     13         return self.square
     15 a = Probe()
---> 17 print(a.umn(2,3))
     18 print(a.summ(2,3))
     19 print(a.square(2,3))

Input In [18], in Probe.umn(self, x, y)
      6 def umn(self, x,y):
      7     self.umn = x*y
----> 8     self.summ = x*3*y*self.summ
      9     return self.summ

TypeError: unsupported operand type(s) for *: 'int' and 'method'