为什么当我在 RobotQ1 输入中输入“YES”时用户输入仍然通过循环？

Question

Basically, once the user has decide to entered "YES" as per the RobotQ1 variable, I want the code to start again, however, it goes through the 2nd user input which RobotQ2.

restart = "Yes".lower()
while restart == "YES".lower():
         print(" In order to obtain the harmonized code of your item answer all the following questions")
         print()
         print("Q1 : Does your car have 4 wheel drive")
         RobotQ1 = input("YES / NO ?:")
         if RobotQ1 == "YES".lower():
            print("Here is the HS code:...")
            restart = input("Do you want to use the application? (Yes / No): ")         
         if restart =="NO".lower():
            print("bye")
            break
         elif RobotQ1 == "NO".lower():
            print("Q2 : Does your Robot have 7 axes ?")
         RobotQ2 = input("YES / NO ?:")   
         if RobotQ2 == "YES".lower():
            print("Here is the HS code:....")
            restart = input("Do you want to use the application? (Yes / No): ")
         if restart =="NO".lower():
            print("bye")
            break

Answer 1

So you want to start over your loop without breaking out, in this case:

Add continue

The continue statement in Python returns the control to the beginning of the current loop. When encountered, the loop starts next iteration without executing the remaining statements in the current iteration.

Answer 2

Basically You want is

if RobotQ1 is Yes==> Give HS Code and ask for Restart

if Robot Q1 is No ==> Ask 7 Axes (if Yes) ==> give Hs Code ==> Ask For Restat

I Think Here is Nice One

restart = "Yes".lower()

while restart == "Yes".lower():
    print(" In order to obtain the harmonized code of your item answer all the following questions")
    print()
    print("Q1 : Does your car have 4 wheel drive")
    RobotQ1 = input("Yes/No ?:")

    if RobotQ1.lower() == "Yes".lower():
        print("Here is the HS Code ...")
    else:
        print("Q2 : Does your Robot have 7 axes ?")
        RobotQ2 = input("Yes/No")
        if RobotQ2.lower() == "Yes".lower():
            print("Here is Hs Code")

    restart = input("Do you want to use the application? (Yes / No): ")
    restart.lower()

    if restart == "No".lower():
        print("bye")
        break