Question

我在Python中运行关于字典的练习，当我运行代码时它返回一个我无法调试的错误。我不知道我是否在字典中使用了错误的运算符，因为[]也在列表中使用

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 State has: ", + cities['NY']
print "OR State 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 states.items():
    print "%s is abbreviated %s" % (state, abbrev)

print '_' * 10
for abberv, city in cities.items():
    print "%s has the city %s" % (abbrev, city)

print '_' * 10
for state, abbrev in states.items():
    print "%s state is abbreviated %s and has city %s" %(state, abbrev, cities[abbrev])


print '_' * 10

我收到了这条新消息

error message

Answer 1

请不要发布代码截图...

第35行缺少+，但由于您只发布了一张图片，因此我不会为您输入正确的行。

Answer 2

你需要添加+来连接字符串。

print＆＃34;关于密歇根＆＃34; +陈述[＆＃39; michigan＆＃39;]

或

print＆＃34;关于密歇根州的事情，＃[;＃michigan＆＃39;]

从书中学习Python，我无法对这个练习进行调查

2 个答案: