# import collections
#
# print(collections.__all__)
# print(dir(collections))
#
# d = {}
# d.setdefault(2, []).append(23)
# d.setdefault(2, []).append(11)
# print(d)
# d.setdefault(2, []).append(23)
#
# # 定义一个curry风格函数
# x = lambda y: [
#     print(y),
#     print("..."),
#     x
# ][-1]
# print(x(1)(2))
#
# import heapq
# print(heapq.nlargest(1, [
#     {'S': 5, 'H': 3},
#     {'S': 7, 'H': 1},
#     {'S': 0, 'H': 2}
# ], key=lambda x: x['S']))
#
# s = [1, [2, [3, [4, [5, 6], 7], 8], (9, 0)]]
# f = lambda x: [y for _x in x for y in f(_x)] if isinstance(x, (list, tuple)) else [x]
#
# print(f(s))  # [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]