5-3
alien_color='green'
if alien_color=="green":
?? ?print("得五分")
elif alien_color=="red":
?? ?print("得一分")
else:
?? ?print("得三分")
?5-7
favorite_fruits=['apple','banana','pear']
if 'pear' in favorite_fruits:
?? ?print('pear'.title()+" is the best!")
if 'apple' in favorite_fruits:
?? ?print('apple'.title()+" is the best!")
if 'banana' in favorite_fruits:
?? ?print('banana'.title()+" is the best!")
if 'peach' in favorite_fruits:
?? ?print('peach'.title()+" is the best!")
if 'cherry' in favorite_fruits:
?? ?print('cherry'.title()+" is the best!")
5-8
list=['a','b','c','admin','e']
for i in list:
?? ?if i=='admin':
?? ??? ?print("Hello admin, would you like to see a status report?")
?? ?elif 1!='admin':
?? ??? ?print(f"Hello {i.title()}, thank you for logging in again.")
?
?
5-9
list=['a','b','c','admin','e']
for i in list:
?? ?if i=='admin':
?? ??? ?print("Hello admin, would you like to see a status report?")
?? ?elif i!='admin':
?? ??? ?print(f"Hello {i.title()}, thank you for logging in again.")
?? ?else:
?? ??? ?print("We need to find some users!")
?
?
5-10
current_users=['a','b','C','d','e']
new_users=['c','D','g','h','i']
for i in new_users:
?? ?if i.lower() in current_users or i.upper() in current_users:
?? ??? ?print("请输入别的用户名")
?? ?else:
?? ??? ?print("该用户名未被使用")
?
5-11
numbers=list(range(1,10))
for i in numbers:
?? ?if i==1:
?? ??? ?print("1st")
?? ?elif i==2:
?? ??? ?print('2nd')
?? ?elif i==3:
?? ??? ?print('3rd')
?? ?else:
?? ??? ?print(f"{i}th")
?
?