明明是正确的啊

def upload_data():
    access_token=get_accesstoken()
    url="https://aip.baidubce.com/rpc/2.0/easydl/dataset/addentity?access_token="+access_token
    headers={}
    headers['Content-Type']="application/json"
    rets=get_img_data()
    for i,entity_name in enumerate(rets):
        datas = {}
        datas['type'] = "OBJECT_DETECTION"
        datas['dataset_id'] =45138
        datas['entity_name']=entity_name
        imgpth=r"E:/download/guangdong1_round1_train1_20190818/guangdong1_round1_train1_20190818/defect_Images/"+entity_name
        bs64data=base64.b64encode(open(imgpth, 'rb').read())
        datas['entity_content']=bs64data
        datas['labels'] = []
        for lb in rets[entity_name]:
            tmp={}
            tmp['label_name']=lb['label_name']
            tmp['left']=lb['left']
            tmp['top']=lb['top']
            tmp['width']=lb['width']
            tmp['height']=lb['height']
            datas['labels'].append(tmp)
        #print(datas)
        txt=requests.post(url,data=datas,headers=headers).text
        print(txt)
    return txt