problem description using luigi framework to crawl faers data reported an error, IDE is pycharm error message is No task specified Process finished with exit code 1 2. Source code import os import re import shutil import requests from io imp...
problem description cannot get the next page related codes Please paste the code text below (do not replace the code with pictures) import scrapy from qsbk.items import QsbkItem from scrapy.http.response.html import HtmlResponse from scra...
I run the single file directly without import errors. In addition, it is normal for me to use mongodb in the py file alone, but when I run it in the scrapy project, I will say that the import failed. Why? import json import pymongo from scrapy.utils.pr...
squares = [] for x in range(1, 5): squares.append(x) print(squares) the result is [1] [1, 2] [1, 2, 3] [1, 2, 3, 4] my understanding is as follows, is this correct? Or should I force an explanation? x = 1, append (x) adds 1 to the list. A...
this is the core code of my simulated login: def __init__(self): dcap = dict(webdriver.DesiredCapabilities.PHANTOMJS) -sharp userAgent -sharp dcap[ -sharp "phantomjs.page.settings.userAgent"] = "Mozilla 5.0 (...
ask, scrapy crawler, why did I send it to scrapy.Request https: www.tianyancha.com reportContent 24505794 2017 then print out the url in callback to become https: www.tianyancha.com login?from=https: www.tianyancha.com reportContent 24505794 2017...
appium+ simulator found the id of the element with uiautomatorviewer but: find_element_by_id( com.ss.android.me:id i7 ) makes a mistake selenium.common.exceptions.NoSuchElementException: Message: An element could not be located on the page using ...
problem description I want to crawl the contents of all the td tags in the tr tag and get the absolute path within the onclick attribute the environmental background of the problems and what methods you have tried try to directly ignore onclick ...
<h4>1< h4> text text text <h4>2< h4> text text text <span>asdf< span> <h4>3< h4> 4 1 1 2 2 text description 4 text 1 2 HTML code as above, how do I get the content between two ? For exam...
the website I am crawling now displays only 20 pieces of data. Only when the mouse scrolls to the bottom can it display another 20 pieces, and then scroll to the bottom to continue to display all 60 pieces of data . how can I achieve this effect with s...
question : RedisCrawlSpider s crawler template is used in the project to achieve two-way crawling, that is, a Rule handles horizontal url crawling of the next page, and a Rule handles vertical detail page url crawling. Then the effect of distributed ...
<table> <thead><tr>< tr>< thead> <tbody> <tr class="aaa">< tr> <tr>< tr> <tr class="aaa">< tr> <tr>< tr> <tr>< tr> <tr cla...
it is said that on_message can, but I still can t test it. Is there any way to achieve it? def detail_page(self, response): results = json.loads(response.text) for result in results: date = result[ date ] number = response.ur...
for example, if you use python to crawl the on-screen comment of Douyu s live room, do you need to ensure that 100 threads connect at the same time? ...
for example, if you use python to crawl the on-screen comment of Douyu s live room, do you need to ensure that 100 threads connect at the same time? ...
recently climbed a video app, to climb to the last step. I don t know how to break this encryption ...
it used to be fine, but now it doesn t work. I don t know what the reason is, and Baidu didn t find out why. I asked the boss for help, thank you D:python.ptc > D:python.ptc > pyspider all dazzle anacondalibsitelypackagespyspiderlibsutils.pyride1...
<div class="container"> <div class="col-12 col-sm-3"> <p class="title"> 001 < div> <div class="col-12 col-sm-3"> <p class="title"> 999 < div&...
the idea is to first construct the url list all_url and then for i in range (0, len (all_url)): urlqueue.put (all_ URL [I]) then get can pull url from the list every time now the problem is that range cannot be written as 0 to list length will sh...
the website I encounter now seems to use distil networks, an anti-crawler service. If you need to get the data, you must bring cookie, without cookie. All requests will be returned directly . <!DOCTYPE html> <html> <head> <META NAM...
Project directory is react ------------react-client ------------react-backend express now I m going to publish it to the server. Am I npm run build separately on react-client react-backend? B...
JDK11 said some time ago that it could not be downloaded and there was a charge, but now it can be downloaded. The download page only says that the agreement has changed, but it can still be downloaded. What has changed? download address: https: www.o...
topic description webpack error, ask the bosses to answer. sources of topics and their own ideas -sharp {extry file}main.js -sharp {destination for bundled file} -sharp {} webpack {entry file} {destination for bundled file} I run webpack app ma...
I used under electron ...
var newsname; ctrl.checkNameLegal = function () { if (ctrl.fileName) { var exports = ^(?![.])[ u4e00- u9fa5_.a-zA-Z0-9]+$ ig; if (exports.test(ctrl.fileName)) { newsname = ctrl.fileName; } else { ctrl.fileName = newsname; } } else { newsname = ...