elif语句未按预期工作

Question

我试着查看多个来源，看看哪一个有一个特定的条目。你知道吗

我的输入看起来像：

json_str2 = urllib2.urlopen(URL2).read()
u = json.loads(json_str2)
#load all five results
One = u['flightStatuses'][0]
Two = u['flightStatuses'][1]
Three = u['flightStatuses'][2]
Four = u['flightStatuses'][3]
Five = u['flightStatuses'][4]

我的if语句工作正常，得到了正确的结果：

if One['flightNumber'] == str(FlEnd):
    fnumber = One['flightId']
    print fnumber

但是当我添加elif:时，即使第一个语句是True，答案也是错误的（没有）。你知道吗

我不明白为什么elif不起作用？你知道吗

# if statement checks each result to define flightId, needed for tracking.
if One['flightNumber'] == str(FlEnd):
    fnumber = One['flightId']
elif Two['flightNumber'] == str(FlEnd):
    fnumber = Two['flightId']
print fnumber

Answer 1

你应该把它写成五个飞行状态的循环，而不是使用五个变量和五个条件。你知道吗

results = json.loads(urllib2.urlopen(URL2).read())['flightStstuses']
for result in results:
    if result['flightNumber'] == str(FlEnd):
        fnumber = result['flightId']
        break
else:
    fnumber = None
print fnumber