字典的键值排序
import operator
# 1表示按照值排序
xs = {"a": 4, "b": 3, "c": 2, "d": 1, "f": 0, "e": 9}
print(dict(sorted(xs.items(), key=lambda x: x[1])))
print(dict(sorted(xs.items(), key=operator.itemgetter(1))))
# 0表示按照建排序
print(dict(sorted(xs.items(), key=lambda x: x[0])))
print(dict(sorted(xs.items(), key=operator.itemgetter(0))))