{u'log_id': 1520120155451L, u'timestamp': 1529996449, u'cached': 0, u'result': None, u'error_code': 222001, u'error_msg': u'param[image] is null'}

提示上面的错误，如何修改？（python2.7）

代码如下

# -*- coding: UTF-8 -*-

from aip import AipFace

# 定义常量
APP_ID = '9851066'
API_KEY = 'LUGBatgyRGoerR9FZbV4SQYk'
SECRET_KEY = 'fB2MNz1c2UHLTximFlC4laXPg7CVfyjV'

# 初始化AipFace对象
aipFace = AipFace(APP_ID, API_KEY, SECRET_KEY)

# 读取图片
filePath = "1.jpg"
def get_file_content(filePath):
with open(filePath, 'rb') as fp:
return fp.read()

# 定义参数变量
options = {
'max_face_num': 1,
'face_fields': "age,beauty,expression,faceshape",
}
# 调用人脸属性检测接口
result = aipFace.detect(get_file_content(filePath),options)

print(result)
print(type(result))