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Seavegen's questions

Martin Hope
Seavegen
Asked: 2022-06-25 16:57:55 +0000 UTC
  • 0

有一个很大的 mail.txt 文件，它包含 100 万行，我需要分隔域并检查域的 MX-Records。它看起来像这样：

s.ingall@gazetaweb.com

我需要切断邮件并输出一个字符串数组，例如像这样

gazetaweb.com

我有以下代码检查 mx-records

package main

import (
    "fmt"
    "net"
    "os"
    "log"
    "ioutil"

)

func ReadFileDomains() {
    file, err := os.Open("mail.txt")
    if err != nil {
        log.Fatal(err)
    }
    defer func() {
        if err = file.Close(); err != nil {
            log.Fatal(err)
        }
    }()

    b, err := ioutil.ReadAll(file)
    fmt.Print(b)
}

func CheckEmail() {
    domains := ReadFileDomains()
    txtrecords, _ := net.LookupTXT(domains())

    for _, txt := range txtrecords {
        fmt.Println(txt)
    }
}

底线是我需要快速检查域并将读取域文件的方法传递给 net.LookupTXT(ReadFileDomains) 并写入文件的结果

файлы
Martin Hope
Seavegen
Asked: 2022-05-04 20:17:23 +0000 UTC
  • 0

有这种字典

   {'telegram': {'afghanistan': {'virtual18': {'cost': 12.19, 'count': 1000}, 'virtual23': {'cost': 16.25, 'count': 1000}}

我需要按最低价格对价格值进行排序

import json
import requests

product = 'telegram'
headers = {
    'Content-Type': 'application/json',
}
params = (
    ('product', product),
)
response = requests.get('https://5sim.net/v1/guest/prices', headers=headers, params=params)
r = response.json()

for smth in r['telegram']:
    if smth['cost']:
        print(smth)

然后我不明白如何遍历字典或者使用 min() 函数，帮我弄清楚

python
Martin Hope
Seavegen
Asked: 2021-12-04 05:15:34 +0000 UTC
  • 2

如何解析并记录在标签下的表格中td a href？

import requests
from bs4 import BeautifulSoup
import csv

count = 0
headers = {
    "Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
    "User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0"
}

with open("result.csv", "w", encoding='utf-8') as file:
    writer = csv.writer(file)
    writer.writerow(["#", "АДРЕС", "ТЕЛЕФОН", "ВРЕМЯ РАБОТЫ", "КОЛИЧЕСТВО", "ЦЕНА"])
    for num in range(1, 32):
        req = requests.get(f"https://apteka.net.ua/search/availability/6810/page-{num}?region=&city=", headers=headers)
        soup = BeautifulSoup(req.content, 'html.parser')
        for i in soup.find("table").find_all("td"):
            try:
                adress = i.find(class_="col_address").find_all("a")
                for k in adress:
                    adr = k.text

                phones = i.find(class_="col_phone").find_all("a")
                for j in adress:
                    adr = j.text

                work_time = i.find(class_="col_work").text
                quantity = i.find(class_="col_quantity").text
                prices = i.find(class_="quantity").text
                count += 1
            except Exception as e:
                print(e)
                try:
                    writer.writerow([count,adr,phones,work_time,quantity,prices])
                except Exception as e:
                    print(e)

给出错误消息：

'NoneType' object has no attribute 'find_all'
name 'adr' is not defined
python