编辑
我把事情搞得一团糟!对此我深表歉意!问题与最后 2 个打印语句无关。当我没有主意时添加了这些。整个问题是关于将 title
和 final_price
表单 check_price
传递给 send_email
并在正文和主题中使用它们。 p>
我刚刚碰壁,不知道在这里能找到答案。
我尝试根据 YT 上的一些指南创建网络scraper。然而,由于我缺乏知识和经验,我陷入了如何将 2 个变量 title
和 Final_price
从函数 check_price()
传递到函数 send_mail()
如果我尝试仅使用纯文本发送没有这些变量的电子邮件,一切都会正常。
import os
import smtplib
import requests
from email.message import EmailMessage
from bs4 import BeautifulSoup
EMAIL_ADDRESS = os.environ.get('GMAIL_USER')
EMAIL_PASSWORD = os.environ.get('GMAIL_PASSWORD')
URL_AMZ = 'https://www.amazon.de/Logitech-kabelgebundene-fortschrittlicher-Muskelbelastung-fortschrittliche/dp/B07FNHV4MW/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=26227QRRLWQHF&keywords=logitech+mx+vertical&qid=1571861245&sprefix=logitech+mx+%2Caps%2C342&sr=8-3'
# URL_MBNK = 'https://www.mbank.pl/serwis-ekonomiczny/kursy-walut/'
URL_GGL ='https://www.google.com/search?rlz=1C1GCEU_plPL839PL839&sxsrf=ACYBGNSHqUQOq6lZRXHyeKLPAd0peUegqg%3A1571862894642&ei=brmwXevuJuaFk74P1Mi12A8&q=euro&oq=euro&gs_l=psy-ab.3..0i71l8.0.0..1236884...0.2..0.0.0.......0......gws-wiz.D2K7kmd_GB8&ved=0ahUKEwjr3eHLnbPlAhXmwsQBHVRkDfsQ4dUDCAs&uact=5'
headers = {"User-Agent":'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36'}
def check_price():
# global title
# global final_price
page_amaz = requests.get(URL_AMZ, headers=headers)
# page_mbnk = requests.get(URL_MBNK, headers=headers)
page_ggl = requests.get(URL_GGL, headers=headers)
soup_amaz = BeautifulSoup(page_amaz.content, 'html.parser')
# soup_mbnk = BeautifulSoup(page_mbnk.content, 'html.parser')
soup_ggl = BeautifulSoup(page_ggl.content, 'html.parser')
title = soup_amaz.find(id='productTitle').get_text()
price = soup_amaz.find(id='priceblock_ourprice').get_text()
converted_price = float(price[0:-2].replace(',','.'))
# convert_ratio = soup_mbnk.find(id="currencies").get_text()
convert_ratio_ggl = soup_ggl.find('div','dDoNo vk_bk').get_text()
clean_convert_ratio = float(convert_ratio_ggl[0:4].replace(',','.'))
final_price = converted_price * clean_convert_ratio
if(final_price > 200):
send_email()
return title, final_price
def send_email():
title, final_price = check_price()
msg = EmailMessage()
msg['Subject'] = f'Zmiana ceny produktu {title}' #% (title)
msg['From'] = EMAIL_ADDRESS
msg['To'] = 'I know it's bit to late... but here was my email'
msg.set_content(f'Cena {final_price} -- Link:{URL_AMZ}') # % (final_price ,URL_AMZ))
with smtplib.SMTP_SSL('smtp.gmail.com', 465) as smtp:
smtp.login(EMAIL_ADDRESS , EMAIL_PASSWORD)
smtp.send_message(msg)
print("Mail Wysłany")
#print(title)
#print(final_price)
编辑 问题解决了。 我感谢所有帮助。
下面是已修复和清理的代码。
import requests
import smtplib
import os
from bs4 import BeautifulSoup
from email.message import EmailMessage
EMAIL_ADDRESS = os.environ.get('GMAIL_USER')
EMAIL_PASSWORD = os.environ.get('GMAIL_PASSWORD')
URL_AMZ = 'https://www.amazon.de/Logitech-kabelgebundene-fortschrittlicher-Muskelbelastung-fortschrittliche/dp/B07FNHV4MW/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=26227QRRLWQHF&keywords=logitech+mx+vertical&qid=1571861245&sprefix=logitech+mx+%2Caps%2C342&sr=8-3'
URL_GGL ='https://www.google.com/search?rlz=1C1GCEU_plPL839PL839&sxsrf=ACYBGNSHqUQOq6lZRXHyeKLPAd0peUegqg%3A1571862894642&ei=brmwXevuJuaFk74P1Mi12A8&q=euro&oq=euro&gs_l=psy-ab.3..0i71l8.0.0..1236884...0.2..0.0.0.......0......gws-wiz.D2K7kmd_GB8&ved=0ahUKEwjr3eHLnbPlAhXmwsQBHVRkDfsQ4dUDCAs&uact=5'
headers = {"User-Agent":'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36'}
def check_price():
page_amaz = requests.get(URL_AMZ, headers=headers)
page_ggl = requests.get(URL_GGL, headers=headers)
soup_amaz = BeautifulSoup(page_amaz.content, 'html.parser')
soup_ggl = BeautifulSoup(page_ggl.content, 'html.parser')
title = soup_amaz.find(id='productTitle').get_text()
final_title = title.strip() # variable title contain monstrocity that contained 5 8x \r\n above and belowe title.
price = soup_amaz.find(id='priceblock_ourprice').get_text()
converted_price = float(price[0:-2].replace(',', '.'))
convert_ratio_ggl = soup_ggl.find('div','dDoNo vk_bk').get_text()
clean_convert_ratio = float(convert_ratio_ggl[0:4].replace(',','.'))
final_price = converted_price * clean_convert_ratio
if final_price > 200:
send_email(final_title, final_price)
def send_email(final_title, final_price):
msg = EmailMessage()
msg['Subject'] = f'Zmiana ceny produktu {final_title}'
msg['From'] = EMAIL_ADDRESS
msg['To'] = 'EMAIL_ADDRESS'
msg.set_content(f'Cena {final_price} -- Link:{URL_AMZ}')
with smtplib.SMTP_SSL('smtp.gmail.com', 465) as smtp:
smtp.login(EMAIL_ADDRESS , EMAIL_PASSWORD)
smtp.send_message(msg)
print("Mail Wysłany")
check_price()
后来我遇到了 Send_email()
生成错误的问题
ValueError: header 值可能不包含换行符或回车符
这是由变量 title
引起的(它没有从上面和下面的所有空行中删除。
再次衷心感谢大家。
最佳答案
我相信您获取变量 title
和 final_price
的方法很好,它应该可以工作。
但是,最后两个打印不应该起作用,因为它们位于 send_email() 函数之外,因此 title
和 final_price
未知。您是否尝试过将 print 放入函数中并调用它?
更新:
我现在看到错误,您在check_price()
内调用send_email()
,并在send_email内调用
,这可能会导致永无休止的循环。check_price()
()
为了解决这个问题,如果您要调用的函数是 check_price()
,您可以使 send_email()
接受两个参数并在调用时传递它们。因此,在 check_price()
中,您将执行以下操作:
...
if(final_price > 200):
send_email(title,final_price)
...
然后send_email
将如下:
def send_email(title,final_price):
msg = EmailMessage()
...
更新 2:
您还在单引号字符串中使用撇号:
'I know it's bit to late... but here was my email'
你应该这样做:
"I know it's bit to late... but here was my email"
关于python - 在函数之间传递两个变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58541319/