[已解决]求大神解答

窝在家里写程序

states = {
    'Oregon':'OR',
    'Florida':'Fl',
    'California':'Ca',
    'New York': 'NY',
    'Michigan':'MI'
}


cities = {
    "CA":'San Francisco',
    'MI':'Detroit',
    'FL':'jacksonville'
}


cities['NY'] = 'New York'
cities['OR'] = 'Portland'


print('-' * 10 )
print('NY Steat has:',cities['NY'])
print('OR Steat has:',cities['OR'])


print('-' * 10)
print("Michigan's abbreviation is:",states['Michigan'])
print("Florida's abbreviation is:",states['Florida'])


print('-' * 10)
print("Michigan has:",cities[states['Michigan']])
print("Florida has:",cities[states['Florida']])


print('-' * 10)
for state, abbrev in list(states.items()):
    print(f"{abbrev} has the city {abbrev}")


print('-' * 10)
for abbrev,city in list(cities.items()):
    print(f'{abbrev} has the city {city}')


print('-' *10)
for state, abbrev in list(states.items()):
    print(f'{state} state is abbreviated {abbrev}')
    print(f"and has city {cities[abbrev]}")

print('-' * 10)

state = state.get('Texas')

if not state:
    print("Sorry, no Texas.")


city = cities.get('TX','Does Not Exist')
print(f'The city for the state "TX" is:{city}')





我想问下   我哪里出错了  出什么错了

最佳答案

月排行榜 / 总排行榜

altf11

2020-10-24 18:15:32

楼上的代码有行号，参照楼上的代码说（以后发帖子最好使用高级模式里的代码编辑器，<>这个符号，代码发出来有行号，好说明）

首选，第32、33行，使用字典 states 的 value 作为字典 cities 的键取值，但大小写不对应，改成对应的

这点楼上说过了，第03行Fl 改成FL，第 04行Ca 改成CA

其次第60行， 第 47行 for state, abbrev in list(states.items()) 解包后 state为字符串类型

字符串是没有 .get() 这个方法的，你可以将 第53 到第 56行改成：

1. if 'Texas' not in state:
   
2.     print("Sorry, no Texas.")

复制代码

跳转到最佳答案楼层

冰河星云

拼写错误吧
而且字符串里没有get这个方法
改成

1. states = {
   
2.     'Oregon':'OR',
   
3.     'Florida':'FL',
   
4.     'California':'CA',
   
5.     'New York': 'NY',
   
6.     'Michigan':'MI'
   
7. }
   
8. 
   
9. 
   
10. cities = {
    
11.     "CA":'San Francisco',
    
12.     'MI':'Detroit',
    
13.     'FL':'jacksonville'
    
14. }
    
15. 
    
16. 
    
17. cities['NY'] = 'New York'
    
18. cities['OR'] = 'Portland'
    
19. 
    
20. 
    
21. print('-' * 10 )
    
22. print('NY Steat has:',cities['NY'])
    
23. print('OR Steat has:',cities['OR'])
    
24. 
    
25. 
    
26. print('-' * 10)
    
27. print("Michigan's abbreviation is:",states['Michigan'])
    
28. print("Florida's abbreviation is:",states['Florida'])
    
29. 
    
30. 
    
31. print('-' * 10)
    
32. print("Michigan has:",cities[states['Michigan']])
    
33. print("Florida has:",cities[states['Florida']])
    
34. 
    
35. 
    
36. print('-' * 10)
    
37. for state, abbrev in list(states.items()):
    
38.     print(f"{abbrev} has the city {abbrev}")
    
39. 
    
40. 
    
41. print('-' * 10)
    
42. for abbrev,city in list(cities.items()):
    
43.     print(f'{abbrev} has the city {city}')
    
44. 
    
45. 
    
46. print('-' *10)
    
47. for state, abbrev in list(states.items()):
    
48.     print(f'{state} state is abbreviated {abbrev}')
    
49.     print(f"and has city {cities[abbrev]}")
    
50. 
    
51. print('-' * 10)
    
52. 
    
53. if 'Texas' not in state:
    
54.     print("Sorry, no Texas.")
    
55. 
    
56. 
    
57. city = cities.get('TX','Does Not Exist')
    
58. print(f'The city for the state "TX" is:{city}')

复制代码

altf11

楼上的代码有行号，参照楼上的代码说（以后发帖子最好使用高级模式里的代码编辑器，<>这个符号，代码发出来有行号，好说明）

首选，第32、33行，使用字典 states 的 value 作为字典 cities 的键取值，但大小写不对应，改成对应的

这点楼上说过了，第03行Fl 改成FL，第 04行Ca 改成CA

其次第60行， 第 47行 for state, abbrev in list(states.items()) 解包后 state为字符串类型

字符串是没有 .get() 这个方法的，你可以将 第53 到第 56行改成：

1. if 'Texas' not in state:
   
2.     print("Sorry, no Texas.")

复制代码