python如何将代码更改为递归函数

Question

这是在子目录（不是当前目录）中打印文件的python代码。我想将此代码更改为递归函数（使用递归调用）如何更改它？

def search_file(dirpath):
    filenames = os.listdir(dirpath)
    for filename in filenames:
        fullname = os.path.join(dirpath, filename)
        if os.path.isdir(fullname):
            os.chdir(fullname)
            sub_filenames = os.listdir(fullname)
            for sub_filename in sub_filenames:
                print(sub_filename)

Answer 1

正如Tom所说，遇到目录时，您只需要再次调用该函数。如果它不是目录，则只需将名称打印出来。

def search_file(dirpath):
   filenames = os.listdir(dirpath)

   for filename in filenames:
        fullname = os.path.join(dirpath, filename)
        if os.path.isdir(fullname):
            search_file(fullname)
        else:
            print(fullname)