在电子邮件正文中发送循环结果

Question

我正在尝试在电子邮件内容（示例 2）中显示 "print" 结果（示例 1）。

我使用的数据：

 {
  "@odata.context": "XXX",
  "value": [
    {
      "Customer_Name": "ABC inc",
      "Customer_No": "002",
      "Date_of_Export": "2020-01-10T05:36:55.3Z",
      "Error_Message": "error message 1.",
      "Type_of_Export": "E-Mail"
    },
    {
      "Customer_Name": "CBA inc",
      "Customer_No": "001",
      "Date_of_Export": "2020-01-10T05:39:13.137Z",
      "Error_Message": "Error message 2",
      "Type_of_Export": "E-Mail"
    }
  ]}

示例 1（打印）：

当我使用下面的代码时，我得到了想要的结果：

r = requests.get("http://www.example.com/test.json")
r_dict = json.loads(r.text)

if len(r_dict["value"])==0:
    print("No errors")
else:
    print("List of errors:\n")
    for item in r_dict["value"]:
        print('"Customer":', '(' + item['Customer_No'] + ')' + item['Customer_Name'] + ', "Typ":', item['Type_of_Export'] + ', "Error": ', item['Error_Message'])

我得到：

List of errors:

"Customer": (002)ABC inc, "Typ": E-Mail, "Error": error message 1.
"Customer": (001)CBA inc, "Typ": E-Mail, "Error": Error message 2

示例 2（邮件）：

但我无法获得在电子邮件正文中发送相同结果的权利，因为只包含最后一行

List of errors:

"Customer": (001)CBA inc, "Typ": E-Mail, "Error": Error message 2

我使用的代码：

import json
import requests
import smtplib
from requests_ntlm import HttpNtlmAuth
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

html_top = """<html><body>"""
html_end = """</body></html> """

r = requests.get("http://www.example.com/test.json")
r_dict = json.loads(r.text)

    if len(r_dict["value"])==0:
        print("No errors")
    else:
            html_body_top = "<p>List of errors:<br></p>"

            for item in r_dict["value"]:
                html_body = '"Customer":' + '(' + item['Customer_No'] + ')' + item['Customer_Name'] + ', "Typ":' + item['Type_of_Export'] + ', "Error": ' + item['Error_Message']
            mail_html = MIMEText(html_top + html_body_top + html_body + html_end, "html")
            message.attach(mail_html)
            with smtplib.SMTP("000.000.000.000", xx) as server:
                    server.sendmail(sender_email, receiver_email, message.as_string())

我想发送包含所有 2 行的电子邮件，就像示例 1 中一样。

Answer 1

在 for 循环之前，声明 html_body 并使用 += 添加值：

html_body = ""
for item in r_dict["value"]:
                html_body += '"Customer":' + '(' + item['Customer_No'] + ')' + item['Customer_Name'] + ', "Typ":' + item['Type_of_Export'] + ', "Error": ' + item['Error_Message'] + '\n'

我在末尾添加了 \n 到 "print" 分界线。

Answer 2

您的问题是，每次循环迭代时，您都会覆盖 html_body

的先前值

for item in r_dict["value"]:
                html_body = '"Customer":' + '(' + item['Customer_No'] + ')' + item['Customer_Name'] + ', "Typ":' + item['Type_of_Export'] + ', "Error": ' + item['Error_Message']

一个快速的解决方案是改为使用 += 运算符并在末尾添加一个换行符。

html_body = ''
for item in r_dict["value"]:
                html_body += '"Customer":' + '(' + item['Customer_No'] + ')' + item['Customer_Name'] + ', "Typ":' + item['Type_of_Export'] + ', "Error": ' + item['Error_Message'] + '\n'

在电子邮件正文中发送循环结果

Send loop result within email body

python

json

loops

smtplib