import os
file_list = []
for root, dirs, files in os.walk("./", topdown=False):
    for name in dirs:
        file_list.append(os.path.join(root, name) + os.sep)
    for name in files:
        file_list.append(os.path.join(root, name))
print(file_list)


s = set()
s.update("1231asdb我深大")
s.update("g6712")

print(len(s))

print(len("".join(["sdas", "我是觉得", "111"])))