如何将Python中的请求库用于多个参数？

我正在用Python编写一个程序，该程序通过使用MOT交易API获取车辆注册并返回其MOT历史记录。到目前为止，我已经有了一辆车的程序。我希望程序通过导入包含车辆登记列表的excel文件来查找多辆车辆。这是我的密码：

import requests
from datetime import datetime
import smtplib
import time
import pandas as pd

df = pd.read_excel(r'vehicles.xlsx')  # Reading the excel file with the vehicle database
reg = df['registration']

headers = {
        'Accept': 'application/json',
        'x-api-key': apiKey,
    }

    params = (
        ('registration', reg),
    )
    response = requests.get('https://beta.check-mot.service.gov.uk/trade/vehicles/mot-tests',
                            headers=headers, params=params)

def check_days_left():
    r = response.json()  # This returns a list of dicts of the full MOT History data
    carDetails = r[0]  # Access the first dictionary of the list which is MOT tests
    motTests = carDetails['motTests']  # This returns a list of dicts of the MOT tests
    latestTest = motTests[0]  # Access the first dictionary to get the details of the latest test
    expDate = latestTest['expiryDate']  # This returns the expiry date key of the latest test dictionary
    uk_date = datetime.strptime(expDate, '%Y.%m.%d')  # Convert expDate to datetime format
    difference = uk_date - datetime.now()  # Gets the timedelta between now and expiry date
    days_left = difference.days  # Extract the number of days from the above as an int
    print(days_left)

check_days_left()

---

此时，它将返回excel文件中最后一辆车的MOT详细信息，而忽略其余信息。非常感谢您的帮助。谢谢

您可以循环查看所有注册号并请求api以获得每个注册号的结果

工作解决方案可能类似于以下代码-

import requests
from datetime import datetime
import smtplib
import time
import pandas as pd

df = pd.read_excel(r'vehicles.xlsx')  # Reading the excel file with the vehicle database
registrations = df['registration'].tolist()

r = []

# loop through all the registration number in registrations array.
for reg in registrations:
    headers = {
        'Accept': 'application/json',
        'x-api-key': apiKey,
    }
    params = {
        'registration': reg,
    }
    # Add the response from the api in the array `r`
    r.append(requests.get('https://beta.check-mot.service.gov.uk/trade/vehicles/mot-tests', headers=headers, params=params).json())


def check_days_left():
    r = response.json()  # This returns a list of dicts of the full MOT History data
    carDetails = r[0]  # Access the first dictionary of the list which is MOT tests
    motTests = carDetails['motTests']  # This returns a list of dicts of the MOT tests
    latestTest = motTests[0]  # Access the first dictionary to get the details of the latest test
    expDate = latestTest['expiryDate']  # This returns the expiry date key of the latest test dictionary
    uk_date = datetime.strptime(expDate, '%Y.%m.%d')  # Convert expDate to datetime format
    difference = uk_date - datetime.now()  # Gets the timedelta between now and expiry date
    days_left = difference.days  # Extract the number of days from the above as an int
    print(days_left)

check_days_left()

---

使用for循环遍历所有注册号。