dict() constructor builds dictionaries directly from lists of key-value pairs，,# dict() con
dict() constructor builds dictionaries directly from lists of key-value pairs，,# dict() con
# dict() constructor builds dictionaries directly from lists of key-value pairs stored # as tuples. print dict([('sape', 4139), ('guido', 4127), ('jack', 4098)])print dict([(x, x**2) for x in (2, 4, 6)]) # use a list comprehension# When the keys are simple strings, it is sometimes easier to specify pairs using # keyword arguments:print dict(sape=4139, guido=4127, jack=4098)- Dictionary: create a new list of keys，dictionarykeys,d
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