Why overridden method didn't get called?

I'm using Python 3.7.4

classdemo.py

#Base Class
class Staff:
    def __init__ (self, pPosition, pName, pPay):
        self._position = pPosition
        self.name = pName
        self.pay = pPay
        print('Creating Staff object')

    def __str__(self):
        return "Position = %s, Name = %s, Pay = %d" %(self._position, self.name, self.pay)

    @property
    def position(self):
        print("Getter Method")
        return self._position

    @position.setter
    def position(self, value):
        if value == 'Manager' or value == 'Basic':
            self._position = value
        else:
            print('Position is invalid.  No changes made.')
    
    def calculatePay(self):
        prompt = '\nEnter number of hours worked for %s: ' %(self.name)
        hours = input(prompt)
        prompt = 'Enter the hourly rate for %s: ' %(self.name)
        hourlyRate = input(prompt)
        self.pay = int(hours)*int(hourlyRate)
        return self.pay

#Derived class
class ManagementStaff(Staff):
    def __init__ (self, pName, pPay, pAllowance, pBonus):
        super().__init__('Manager', pName, pPay)
        self.allowance = pAllowance
        self.bonus = pBonus

    def calculatePay(self):
        basicPay = super().calculatePay()
        self.Pay = basicPay + self.allowance
        return self.pay

    def calculatePerfBonus(self):
        prompt = 'Enter performance grade for %s: ' %(self.name)
        grade = input(prompt)
        if (grade == 'A'):
            self.bonus = 1000
        else:
            self.bonus = 0
        return self.bonus
    
#Derived class
class BasicStaff(Staff):
    def __init__(self, pName, pPay):
        super().__init__('Basic', pName, pPay)

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inheritancedemo.py

import classdemo

peter = classdemo.BasicStaff('Peter', 0)
john = classdemo.ManagementStaff('John', 0, 1000, 0)

print(peter)
print(john)

print('Peter\'s Pay = ', peter.calculatePay())

print('John\'s Pay = ', john.calculatePay())
print('John\'s Performance Bonus = ', john.calculatePerfBonus())

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output:

It looks like overridden calculatePay( ) didn't get called because John's pay doesn't include allowance.  Why John's pay doesn't include allowance?