Google drive api 为什么会出现错误；“需要权限类型字段”；关于googledriveapi

我正在尝试更改某些文件的权限，google drive返回一个

错误

permission type field required

然而，我提供的类型。所以请有人告诉我我错过了什么

注意：hauth是oauth2授权的http对象

#%% find files and list [This works fine]
q="title='testpop'"
u="https://www.googleapis.com/drive/v2/files"
u=u+"?"+urlencode(dict(q=q))
resp, content = hauth.request(u, "GET")

files = json.loads(content.decode("utf-8"))
for f in files["items"]:
    print(f["title"], f["id"])

#%% make public [this returns error "permission type field required"]
for f in files["items"]:
    u="https://www.googleapis.com/drive/v2/files/{fileId}/permissions" \
                        .format(fileId=f["id"])
    body = json.dumps(dict(role="reader", type="anyone"))
    headers=dict(content_length=len(body))
    resp, content = hauth.request(u, "POST", headers=headers, body=body)
    break

以下是返回的内容：

 b'{\n "error": {\n  "errors": [\n   {\n    "domain": "global",\n    "reason": "required",\n    "message": "Permission type field required",\n    "locationType": "other",\n    "location": "permission.type"\n   }\n  ],\n  "code": 400,\n  "message": "Permission type field required"\n }\n}\n'

---

我认为body应该是body=dict（role=“reader”，type=“anywhere”）。实际上body必须是一个字符串。但是，您提示我尝试使用json头，它可以使用头={“content type”：“application/json”}。谢谢。