Question

我有一个读取JSON文件结构并提取Off_peak，Peak和Shoulder价格的代码。有一些所有元素都存在的JSON，而有些元素只有Peak和Off_Peak而没有肩膀。

try:
    for check in data[0]['planData']['contract'][0]['tariffPeriod'][0]['touBlock']:
        if "Off" in check['name']:
            Off_Peak = check['blockRate'][0]['unitPrice']
        elif "Peak" in check['name']:
            Peak = check['blockRate'][0]['unitPrice']
        elif "Shoulder" in check['name']:
            Shoulder = check['blockRate'][0]['unitPrice']
        
except:
    Off_Peak = ""
    Peak = ""
    Shoulder = ""

我的代码使用所有这些元素（甚至是否找到）检查并更新变量。但是，如果仅找到2个元素，则不会更新未找到的元素，而我想将其更新为0。API示例

API - https://api.energymadeeasy.gov.au/plans/dpids/AMA62448MBE1?postcode=4000

例如，有一个文件具有Off_Peak和Peak，但肩膀变量保持空白，但如果找不到，我想将其更新为0。我尝试使用下面的代码，但无法正常工作。

for check in data[0]['planData']['contract'][0]['tariffPeriod'][0]['touBlock']:
    if "Off" in check['description']:
        Off_Peak = check['blockRate'][0]['unitPrice']
        print('Off_Peak',Off_Peak)
    elif "Peak" in check['description']:
        Peak = check['blockRate'][0]['unitPrice']
        print('Peak',Peak)
    elif "Shoulder" in check['description']:
        Shoulder = check['blockRate'][0]['unitPrice']
        print('Shoulder',Shoulder)
    elif Off_Peak==None:
        Off_Peak=0
    elif Peak==None:
        Peak=0
    elif Shoulder==None:
        Shoulder=0

预期产量

Plan_ID Post_Code   Plan_Type   Plan_Name   Retailer_Name   Retailer_Code   Distributor_Name    State   Effective_Date  Solar_Rate  Discount_Type   Discount    Daily_Rate  CL1 CL2 Single_Rate Off_Peak    Peak    Shoulder
AMA62448MBE1    4000    TOU amaysim Post-paid Electricity - Business    amaysim Energy  AMA Energex QLD 1/07/2020   8           136.8               21.9648 23.328  0

Answer 1

我认为不必为此复杂化，只需将所有3个初始值设置为0。如果找到该值，请再次设置它，否则它将保持为0-

Off_Peak = 0
Peak = 0
Shoulder = 0
try:
    for check in data[0]['planData']['contract'][0]['tariffPeriod'][0]['touBlock']:
        if "Off" in check['name']:
            Off_Peak = check['blockRate'][0]['unitPrice']
        elif "Peak" in check['name']:
            Peak = check['blockRate'][0]['unitPrice']
        elif "Shoulder" in check['name']:
            Shoulder = check['blockRate'][0]['unitPrice']        
except:
    # No need to set it again, but not removing it
    Off_Peak = 0
    Peak = 0
    Shoulder = 0

Answer 2

如何使用“三进制条件”表示一行，如果不是这样的话。

即，如果找到，则将数据输入变量，否则输入0

这样使用

test = True if 10+10 == 20 else False

for check in data[0]['planData']['contract'][0]['tariffPeriod'][0]['touBlock']:
    Off_Peak = check['blockRate'][0]['unitPrice'] if "Off" in check['name'] else 0 
    Peak = check['blockRate'][0]['unitPrice'] if "Peak" in check['name'] else 0 
    Shoulder = check['blockRate'][0]['unitPrice'] if "Shoulder" in check['name'] else 0

编辑：

我刚刚看到了您的API，并且还没有对其进行任何测试！

Python-如果在JSON中找不到元素，则将值更新为0

2 个答案: