ValueError:上载多个文件时，值太多，无法解压缩（应为2个）

Question

我试图通过StravaAPI上传多个文件

在运行uploadFitActivity()方法时，它导致ValueError: too many values to unpack (expected 2)

我相信这个异常是由我的uploadFitActivity()方法引起的，可能与for循环中的f = {'file' : fitfile}有关。但是，我无法理解实际的问题以及例外情况指的是什么

下面是我的uploadFitActivity()方法：

def uploadFitActivity(dirpath, access_token):
    uploads_url = "https://www.strava.com/api/v3/uploads"
    payload = {
        'client_id': client_ID,
        'data_type': 'fit' }
    header = {'Authorization': 'Bearer ' + access_token}

    os.chdir(dirpath)
    for filename in glob.glob("*.fit"):
        with open(filename, 'rb') as fitfile:
            f = {'file' : fitfile}
            res = requests.post( uploads_url,
                                 data = payload,
                                 headers = header,
                                 files = f )