LPTHW练习39元组拆包

Question

我正在试图找出这段代码的原因：

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

print '-' * 10
for state, abbrev in states.items():
    print "%s is abbreviated %s" % (state, abbrev)

给出了这个输出：

----------
California is abbreviated CA
Michigan is abbreviated MI
New York is abbreviated NY
Florida is abbreviated FL
Oregon is abbreviated OR

按此特定顺序出现？输出不应该按字典中的顺序排列吗？

即。我认为它会像：

Oregon is abbreviated OR
Florida is abbreviated FL
California is abbreviated CA
New York is abbreviated NY
Michigan is abbreviated MI

Answer 1

字典没有固有的顺序。如果您关心字典中的项目顺序，请使用collections.OrderedDict。