我有一个字典列表:
people = [{"name": "Roger", "city": "NY", "age": 20, "sex": "M"},
{"name": "Dan", "city": "Boston", "age": 20, "sex": "M"},
{"name": "Roger", "city": "Boston", "age": 21, "sex": "M"},
{"name": "Dana", "city": "Dallas", "age": 30, "sex": "F"}]
我想对它们进行分类,例如我选择这些键:
field = ("sex", "age")
我需要一个catalogue(field, people)
给我的功能:
{ "M":
{ 20: [{"name": "Roger", "city": "NY", "age": 20, "sex": "M"},
{"name": "Dan", "city": "Boston", "age": 20, "sex": "M"}],
21: [{"name": "Roger", "city": "Boston", "age": 21, "sex": "M"}]
},
{ "F":
{ 30: [{"name": "Dana", "city": "Dallas", "age": 30, "sex": "F"}] }
}
当len(field)==1
它很简单时。我想做这样的事情:
c = catalogue(field, people)
for (sex, sex_value) in c.iteritems():
for (age, age_value) in sex_value.iteritems():
print sex, age, age_value["name"]