You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
class Account:
    def __init__(self, name, balance):
        # instance attributes
        self.name = name
        self.balance = balance
    
    # method to withdraw money from account
    def withdraw(self, amount):
        # check if amount is a valid number
        if not isinstance(amount, (int, float)):
            raise ValueError('Invalid amount')
        
        # check if amount is greater than balance
        if amount > self.balance:
            raise ValueError('Insufficient funds')
        
        # subtract the amount from the balance
        self.balance -= amount
    
    # method to deposit money to account
    def deposit(self, amount):
        # check if amount is a valid number
        if not isinstance(amount, (int, float)):
            raise ValueError('Invalid amount')
        
        # add the amount to the balance
        self.balance +=amount

# create an instance of the Account class
my_account = Account('John Doe', 100)

# withdraw money from account
my_account.withdraw(50)

# deposit money to account
my_account.deposit(20)

# print the updated balance
print('Account balance:', my_account.balance)
user
Account balance: 70
assistant