Question

我是Python的新手，也是新手。我正在尝试编写一个程序，该程序使用请求模块向Dark Sky API请求天气预报，然后使用smtplib将电子邮件中的预测发送给我自己。我已将我的代码截断为仅显示相关部分。到目前为止，我一直无法找到任何答案，所以如果这是重复，我会道歉。下面的代码将函数打印到控制台没有任何问题，但当我尝试将它分配给“body”变量并通过电子邮件发送时，电子邮件是空白的。或者如果我使用str（ds.current）），电子邮件只有“无”作为正文。

如何使其工作，以便电子邮件的正文包含已从API请求的预测？非常感谢，对任何菜鸟错误感到抱歉。

import requests
import json
import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText

class Darksky():
    r = requests.get('https://api.darksky.net/forecast/e01635ccacb5548e3d1fa40403bbb3a5/-45.0312,168.6626?units=ca')
    wx_json = r.json()

    def __init__(self, source):
            self.source = source
            print "\n", "-" * 20,  source, "-" * 20, "\n"


    def current(self):
            def summary():
                return "CURRENT WEATHER:"
                x = self.wx_json['currently']['summary']
                return x

# I have tried using print instead of return but that did not work either.

            def temp():
                return "TEMPERATURE:"
                y = self.wx_json['currently']['temperature']
                return y

            summary()
            temp()


    ds = Darksky("DARKSKY WX")

    fromaddr = "watsonthevirtualbutler@gmail.com"
    toaddr = "matt@peakpixel.nz"

    msg = MIMEMultipart()
    msg['From'] = fromaddr
    msg['To'] = toaddr
    msg['Subject'] = "YOUR DAILY WEATHER, SIR."

    body = ds.current()

    # This is where I am trying to save the function result as a string that can be emailed.  
    # I have tried using "str(ds.current())" but that just returns "none".

    print body
    msg.attach(MIMEText(body, 'plain'))


    server = smtplib.SMTP('smtp.gmail.com', 587) 
    server.starttls()
    server.login(fromaddr, "virtualbutler")
    text = msg.as_string()
    msg = "CAN YOU HEAR ME, SIR?"
    server.sendmail(fromaddr, toaddr, text)
    server.quit()

Answer 1

您的summary()和temp()有两个return运营商，而只有一个return可以接受。如果您希望your_function()返回少量值，则可以执行以下操作：return {"first_parameter": "first_value", "second_parameter": "second_value"}，然后将每个值调用为your_function()["first_parameter"]或your_function()["second_parameter"]

尝试以下代码并告诉我结果：

class Darksky():
    r = requests.get('https://api.darksky.net/forecast/e01635ccacb5548e3d1fa40403bbb3a5/-45.0312,168.6626?units=ca')
    wx_json = r.json()

    def __init__(self, source):
        self.source = source
        print "\n", "-" * 20,  source, "-" * 20, "\n"

    def current(self):
        return "CURRENT WEATHER: {0}. TEMPERATURE: {1}".format(self.wx_json['currently']['summary'], self.wx_json['currently']['temperature'])


ds = Darksky("DARKSKY WX")
body = ds.current()

如何将函数的结果保存到字符串中，以便可以通过电子邮件发送（使用smtplib和MIME）？

1 个答案: