删除某个目录下的全部文件

def delete_file_in_dir(dir):
    if not os.path.exists(dir):
        return 1
    try:
        for i in os.listdir(dir):
           path_way = os.path.join(dir,i)
           #如果是文件就删除
           if os.path.isfile(path_way):
               os.remove(path_way)
           else:
               #如果是文件夹调用方法
              delete_file_in_dir(path_way)
        else:
            #删除目录
            os.rmdir(dir)
    except:
        return 1
    return 0

def shutildome():
    import shutil
    filelist = []
    rootdir = "D:\\TOOL\\PycharmProjects\\python\\cz\\815\\2018\\10\\20w"
    filelist = os.listdir(rootdir)
    for f in filelist:
        filepath = os.path.join(rootdir, f)
        if os.path.isfile(filepath):
            os.remove(filepath)
            print(filepath + " removed!")
        elif os.path.isdir(filepath):
            shutil.rmtree(filepath, True)
            print("dir " + filepath + " removed!")
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