5.0if语句.py

name = "Alice"
if name.lower() == "alice":
    print("Hello",name)
else:
    print("I do not know you")

print(3 == 3)
print(30 > 40)


requested_toppings = ['mushrooms', 'onions', 'pineapple']
if 'mushrooms' in requested_toppings:
    print("done it")

print("onions" in requested_toppings)

banned_users = ['andrew', 'carolina', 'david']
user = 'marie'
if user not in banned_users:
    print(user.title() , ", you can post a response if you wish.")

car = 'subaru'
print("Is car == 'subaru'? I predict True.")
print(car == 'subaru')
print("\nIs car == 'audi'? I predict False.")
print(car == 'audi')


users = ['admin', 'alice', 'bob', 'carol', 'dave']
if len(users) == 0:
    print("Dont have users")
else:
    for user in users:
        if user == "admin":
            print("Hello",user.title(),"hao are you")
        else:
            print("Hello",user)