Day3-if语句习题

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Python编程:从入门到实践


'''5-3'''
alien_color=['green','yellow','red']
if 'green' in alien_color:
    print('You got 5 points!')

alien_color=['yellow','red']
if 'green' in alien_color:
    print('You got 5 points!')

Day3-if语句习题_第1张图片

'''5-4'''
alien_color=['green','yellow','red']
if 'green' in alien_color:
    print('You killed a green one!\nYyou got 5 points!')
else:
    print('You got 10 points')

if alien_color == 'green':
    print('You killed a green one!\nYyou got 5 points!')
else:
    print('You got 10 points')

Day3-if语句习题_第2张图片

'''5-5'''
alien_color='green'
if alien_color == 'green':
    print('You got 5 points!')
elif alien_color == 'yellow':
    print('You got 10 points!')
else:
    print('You got 15 points!')
    
alien_color='yellow'
if alien_color == 'green':
    print('You got 5 points!')
elif alien_color == 'yellow':
    print('You got 10 points!')
else:
    print('You got 15 points!')    

alien_color='red'
if alien_color == 'green':
    print('You got 5 points!')
elif alien_color == 'yellow':
    print('You got 10 points!')
else:
    print('You got 15 points!')


Day3-if语句习题_第3张图片

'''5-6'''

age=28
if age < 2:
    print("He's a baby!")
elif age >= 2 and age < 4:
    print("He is learning how to walk!")
elif age >= 4 and age < 13:
    print("He's a kid!")
elif age >= 13 and age <20:
    print("He's a teenager!")
elif age >=20 and age < 60:
    print("He's adult.")
else:
    print("He's elder people.")   

'''5-8'''
special_name=['admin']
user_names=['Alex','admin','Lily','Lucy','Timmy']
if 'admin' in special_name:
        print("Hello admin, would you like to see a status report?")
        for user_name in user_names:
            print('Hello, ' + user_name)
else:
    print("Hello Eric, thank you for logging in again.")

'''5-9'''

special_name=['alex']
user_names=[]
if 'admin' in special_name:
        print("Hello admin, would you like to see a status report?")
        for user_name in user_names:
            print('Hello, ' + user_name)
else:
    print("We need to find some users!")

Day3-if语句习题_第4张图片

'''5-10'''
current_users=['Alex','admin','Lily','Lucy','Timmy']
new_users=['Bob','Paul','Alex','Tom','Timmy']
for new_user in new_users:
    format_name=new_user.lower()
    if new_user in current_users:
        print( format_name + " This name has been used.Please input another name!")
    else:
        print('This name is unused.')

'''5-11'''
numbers=list(range(1,10))

for number in numbers:
    if number == 1:
        print('1st')
    elif number == 2:
        print('2nd')
    elif number == 3:
        print('3rd')
    else:
        print(str(number) + 'th')

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