I want to write a simple crawler today, but I haven t returned response,. I don t know what the problem is. I want to get this data from this website. Just one data is enough! spiders ...
The string starting with r in python means that the backslash is not escaped, for example: >>> s = r"asd a" >>> s asd a the above results are easy to understand, but not if the backslash appears at the end of the st...
import math for i in range (50100room1): for t in range(2,int(math.sqrt(i))+1): if i % t == 0: break else: print(i) if I write like this, what I print out is 51, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, ...
the following test program is written when learning concurrency, and the function is to load data into queue 1 and load it into queue 2 after processing. import time from queue import Queue from concurrent.futures import ThreadPoolExecutor -sharp q1 =...
< H2 > Development < H2 > ...
import random times = 3 secret = random.randint print ( "- I love fish C studio - ") guess = 0 print ( "guess which number the little turtle has in mind now: ", end= ") while (guess! = secret) and (times > 0): temp = input() guess = int(temp) ti...
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how to get libpython3.6m.a? from python3.6 source code after entering the python source code directory, execute the following command to get libpython3.6m.so and libpython3.6m.so.1.0 in usr local lib . . configure -prefix= usr local --enable-shared...
1. When I was going to crawl the video file of a certain website, I found that it was in m3u8 format, and the video file was cut into a small segment, and each segment of the video file format was in jpg format. After I tried to download a small piece o...
such as the title. I just want to use str to convert to a string, and then encode to convert to bytes: >>> str(1).encode( utf-8 ) b 1 is there an easier way? ...
as detailed in the title: wtforms, is used in the flask web project, but csrf secret_key is required to report errors all the time the following is the code: contains multiple file contents, and the file name has been indicated models.py app =...
I m doing a leetcode problem and giving a search tree. Two nodes are given to find the nearest common parent node. the title is easy. I wrote it this way " def lowestCommonAncestor(self, root, p, q): """ :type root: TreeNode ...
v=0 def a(): z=0 z+=random.randint(0,9) return z while v<5: print(a()) v+=1 how to add the return value of function a z loop 5 times ...
The function runs randomly. How to determine whether the current run is the last def a (): pass iTun0 while random number: a() ...
want to use django to develop a resume recruitment system, ask which corporate member and individual member. Is it better to use one User model or to design two? I have now created a new users app, class User (AbstractUser): xxx then the next s...
use the json.dumps method to convert the dictionary to json string, which is not displayed in Chinese. ensure_ascii is set to False . the converted string is: {"first": {"value": " xe8 xae xa2 xe5 x8d x95 xe9 ...
there is a ready-made CET-4 and CET-6 vocabulary on the Internet. Api can get words, translations, phonetic symbols and audio URLs through the vocabulary request. the local audio that Mini Program requests to save 500words at a time, there are three wa...
first of all, when the user logs in, I want to display the user s information and get the data in the profile_ajax view. This corresponds to html html formuid . Here is the problem. I click here to view the details. Will the ajax of html not enter th...
crawler file: import scrapy from xtzx.items import XtzxItem < H1 > from scrapy.http import Request < H1 > class LessonSpider (scrapy.Spider): name = lesson allowed_domains = [ xuetangx.com ] start_urls = [ http: www.xuetangx.com courses?c...
as shown in the figure, if you want to do a login interception based on $api.getStorage ( userId ), the desired effect of is 1. Enter the page that can open the green box (main.html), but the other three in the red box cannot be opened directly (mes...
$(window).scroll(function(){ var WindowHeight = $(window).height(); if($(window).scrollTop() >= $(document).height() - WindowHeight){ $( -sharploader ).html( <img src=".. images loading_v2.svg"> ); var LastDiv = $(&q...
SELECT t.name AS tname FROM `product` as p JOIN `product_theme` as pt ON pt.prod_id = p.prod_id JOIN `theme` as t ON t.theme_id = pt.theme_id theme product_theme product theme product_theme pro...
in mxgraph, I want to manipulate (add, delete or modify) attributes directly in the xml node of mxcell in the drawing. The setAttribute of the mxcell object does not work. Is there any way to achieve this function? ...
the resolution of the picture is 300cm 500, and the coordinate of a point in it is (100100). When the picture is enlarged to 1080mm 1920, how much should the original (100100) coordinate be converted to ...
problem description ...