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2019-02-18 阅读量: 651
python如何创建字典?

在Python中,字典可以通过将元素的序列卷曲内创建{}括号,由“逗号”分离。Dictionary包含一对值,一个是Key,另一个是对应的pair元素

Key:value。字典中的值可以是任何数据类型,可以复制,而键不能重复,必须是不可变的

字典也可以通过内置函数dict()创建。只需放置大括号{}就可以创建一个空字典。注 -字典键区分大小写,名称相同但Key的不同情况将被明确区分。

# Creating an empty Dictionary

Dict = {}

print("Empty Dictionary: ")

print(Dict)

# Creating a Dictionary

# with Integer Keys

Dict = {1: 'Geeks', 2: 'For', 3: 'Geeks'}

print("\nDictionary with the use of Integer Keys: ")

print(Dict)

# Creating a Dictionary

# with Mixed keys

Dict = {'Name': 'Geeks', 1: [1, 2, 3, 4]}

print("\nDictionary with the use of Mixed Keys: ")

print(Dict)

# Creating a Dictionary

# with dict() method

Dict = dict({1: 'Geeks', 2: 'For', 3:'Geeks'})

print("\nDictionary with the use of dict(): ")

print(Dict)

# Creating a Dictionary

# with each item as a Pair

Dict = dict([(1, 'Geeks'), (2, 'For')])

print("\nDictionary with each item as a pair: ")

print(Dict)

输出:

0.0000
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