Good Question, here is my response to your python calculator and the reset functionality:

# This function adds two numbers
def add(x, y):
    return x + y

# This function subtracts two numbers
def subtract(x, y):
    return x - y

# This function multiplies two numbers
def multiply(x, y):
    return x * y

# This function divides two numbers
def divide(x, y):
    return x / y

# This function uses to power
def power(x, y):
    return x ** y

# This function uses for the remainder
def remainder(x, y):
    return x % y

# Create a function to display the calculator
def calculator():
    while True:
        print("\nPlease select the operation:")
        print("1: Add")
        print("2: Subtract")
        print("3: Multiply")
        print("4: Divide")
        print("5: Power")
        print("6: Remainder")
        print("7: Terminate")
        print("8: Reset")

        choice = input("Enter choice (1-8 or $ to reset): ")

        # Reset functionality
        if choice == "$":
            print("Resetting calculator...")
            return calculator()

        # Terminate functionality
        if choice == "7":
            print("Terminating calculator. Goodbye!")
            break

        # Validate input
        if choice not in ["1", "2", "3", "4", "5", "6"]:
            print("Invalid input. Please try again.")
            continue

        try:
            num1 = float(input("Enter first number: "))
            num2 = float(input("Enter second number: "))
        except ValueError:
            print("Invalid number entered. Please try again.")
            continue

        if choice == "1":
            print(f"The result is: {add(num1, num2)}")
        elif choice == "2":
            print(f"The result is: {subtract(num1, num2)}")
        elif choice == "3":
            print(f"The result is: {multiply(num1, num2)}")
        elif choice == "4":
            if num2 == 0:
                print("Error: Division by zero is not allowed.")
            else:
                print(f"The result is: {divide(num1, num2)}")
        elif choice == "5":
            print(f"The result is: {power(num1, num2)}")
        elif choice == "6":
            print(f"The result is: {remainder(num1, num2)}")

# Start the calculator
calculator()

This version of the code will help you to understand the logic better, and avoids from reputation and complex coding. This code also checks for the user's input to type a valid number to perform calculation. Also, option 7 allows the user to exit the calculator gracefully.