请解释这段代码的结论

Please explain the conclusion of this code

你能告诉我变量 "count" 到底是什么吗?

    count = 0
    for (r,d,f) in 
        os.walk(os.getcwd()):
        count += 1
    print("a =", count)

    #a = 124

help(os.walk) 会告诉你:

Directory tree generator.

For each directory in the directory tree rooted at top (including top itself, but excluding '.' and '..'), yields a 3-tuple dirpath, dirnames, filenames

因此,count 计算当前工作目录(包括)中的文件夹(也包括嵌套文件夹)。