仔细看,json是一个列表或数组。字典元素就在里面。你反而会 r107s['feedback'] 像-

import json
with open('tmp.txt', 'r') as f:
    r107sData = json.load(f)

for r107s in r107sData:
    print(r107s['feedback'])

输出:

{'sos_signal': 'S0s Signal'}
{'goodfeedback': 'Good feedback'}
{'badfeedback': 'Bad feedback'}
{'sos_signal': 'S0s Signal'}

这就是你想要的-

while True:
    food = int(input("food bill: "))
    if food <= 10:
       print("please write more than 10")
       continue
    carbill = int(input("carbill: "))
    print("Total Montlhy expenditure is : " , food+carbill)