Python错误：SyntaxError：语法无效。如何解决这个问题？

Question

    #create a mapping of state to abbreviation
states = [
        'Oregon': 'OR',
        'Florida': 'FL',
        'California': 'CA',
        'New York': 'NY',
        'Michigan': 'MI'
]

# create a basic set of states and some cities in them
cities = [
        'CA': 'San Francisco',
        'MI': 'Detroit',
        'FL': 'Jacksonville'
]
,
#add someor more cities
cities['NY'] = 'New York'
cities['OR'] = 'Portland'

#rprint out some citis
print '-' * 10
print "NY state has: ", cities['NY']
print "OR state has: ", cities['OR']

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

在ex39_dictionaries.py中存储此代码。当我执行它时，我看到下面的错误。这段代码怎么了？

文件“ex39_dictionaries.py”，第3行     '俄勒冈'：'或'，             ^ SyntaxError：语法无效

Answer 1

states = [
    'Oregon': 'OR',
    'Florida': 'FL',
    'California': 'CA',
    'New York': 'NY',
    'Michigan': 'MI'
]

使用方括号，这是尝试定义列表，列表项必须用逗号分隔。但是，您似乎想在此处创建字典（即key: value对的集合），并且必须使用大括号（大括号）：

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