Use dot notation to call a function without using parentheses

[Walk More]

I am trying to use dot notation to call a function without using parentheses, see code section with ***
I have looked into SimpleNamespace, namedTuple, dataclass... but no luck.
Below is my sample code to date.
Any suggestions?



class MyTest:
    def __init__(self):
        self.page1 = Page()
        self.page1.top = Counts()
        #self.page1.middle = Layout()
        #self.page1.bottom = Layout()
        
        # access of variables created on the fly using dot notation work.
        self.page1.top.item1 = 5
        self.page1.top.name1 = "Harry"
        print ("Variables created on the fly: ", self.page1.top.item1, self.page1.top.name1)
        
        
        # access of a predefined class variable using dot notation work.
        print ("Start of predefined class variable access: ", self.page1.top.totalCount)
        self.page1.top.totalCount = 22
        self.page1.top.totalCount = self.page1.top.totalCount + 3
        print ("End of predefined class variable access: ", self.page1.top.totalCount)
        
        
        # function calls using parentheses using dot notation work.
        print ("Start of function calls: ", self.page1.top.getRunningSum())
        self.page1.top.addRunningSum(5)
        self.page1.top.addRunningSum(200)
        endValue = self.page1.top.getRunningSum()
        print ("End of function calls: ", endValue)     


        # *** This is the syntax I would like to use. ***
        # function calls not using parentheses DO NOT WORK using dot notation.
        self.page1.top.addRunningSum = 6
        t = self.page1.top.getRunningSum
        print (t)
    
    
class Page ():
    def __init__ (self):
        pass
    
    
class Counts():
    def __init__ (self):    
        self.totalCount = 0    
    
    def addRunningSum(self, indata):
        self.totalCount = self.totalCount + indata
    
    def getRunningSum (self):
        return self.totalCount
    

if __name__ == "__main__":
    MyTest()

#end of program