python接口测试返回数据为字典取值方式

#接口返回的数据：
api_result = {'code': '000001', 
'dataMap': {'data': 
{'amount': 0, 'billingWeight': 0, 'quantity': 0}},
 'failureString': '', 'failures': [], 
 'flag': 'success', 'hasError': False, 'message': '请求成功'}

#方法1：
print("这是方法1")
for i in api_result.keys():
    if i == 'dataMap':
        print(api_result[i]['data']['amount'])
#方法2：
print("这是方法2")
getkey = api_result.get('dataMap')
# print(getkey)
cc =list(getkey.values())[0]
print(cc['amount'])
#方法3：
print("这是方法3")
print(api_result['dataMap']['data']['amount'])

import time
import requests
import  json
import urllib,hashlib
url = "http://www.xxx.xx"
#获取当前的时间戳
stamp = time.time()
print(stamp)
#转换为int类型的13位时间戳
timestam = int(round(stamp*1000))
print(timestam)
time_new = str(timestam)
print(type(time_new))
data ={
    'appId':'3301820001',
    "outTradeNo":"20201026001",
    "amount":"100",
    "body":"test",
    "timestamp":time_new,
    "notifyUrl":"http://localhost:8080/notify",
}
#将键按照字典序排序
data_order = sorted(data.items(),key=lambda x:x[0],reverse=False)
#将列表转化为字典
data_new = dict(data_order)
print(data_new)
#将key=value键值对进行url编码
datanew = urllib.parse.urlencode(data_new)
datadic = datanew + "&key=BF1BDE5A649724056F904A9335B1C1C7455655"
print(datadic)
#创建md5对象
m = hashlib.md5()
m= hashlib.md5(datadic.encode())
data_md5 = m.hexdigest()
#将小写字母切换为大写字母
sign=data_md5.upper()
print(sign)