I messed up the list with random.shuffle, but it was still in the same order import random a = [20,16,10,5] random.shuffle (a) print ( "randomly sorted list: ", a) I can just try it on my classmate s computer. Is it python3.5 that I am missi...
how to deal with decoding errors when reading files? ...
1. When crawling a web page with python3, the web side shows that the code is utf-8, itself. When crawling, the code is also set to utf-8, but a print result is garbled in Chinese. 2.:url = http: wxqqyy.info thread-922... headers = { }response = ...
there are n ordered sets, and each element of the set is a range. Find the intersection of n sets, for example, the union of sets {[2jue 4], [9jue 13]} and {[6jue 12]} is {[2jue 4], [6jue 13]}. How to implement with python?...
Crawler Code: import requests import re content = requests.get( https: book.douban.com ).text pattern = re.compile( <li.*?cover.*?href="(.*?)".*?title="(.*?)".*?more-meta.*?author">(.*?)< span>.*?year">...
for example, a string: American (United States of) to extract: (United States of) or Abcde (Df WD asdAS ASDW) to extract: (Df WD asdAS ASDW) to use regular expressions Thank you guys ...
pairs of positive integers (xpeny), the remainder of xrecery y is greater than or equal to k, the input is nmemery k, and the output is how many, for example, input 52, output 7, logarithms are (2magin3) (2magin4) (2mem5) (3pyrr5) (4preline 5) (5pc5), t...
wrote a tool with an interface in PyQt5+Python3.6 and wanted to package it into a .exe file so that it could run on a machine without a python environment. Use pyinstaller to package as said on the Internet. After packing, an error is reported after open...
original page html code: <html xmlns="http: www.w3.org 1999 xhtml"> <head> <meta charset="utf-8" > <meta content="pdf2htmlEX" name="generator" > <meta content="IE=edge...
beginner Python, for advice: def print_dict(**person): print(person) print_dict( a = jack , b = rose ) -sharp { a : jack , b : rose } The parameter is preceded by two asterisks so that Python creates a dictionary to hold the ar...
recently, I have been using Python to process bus GPS track data, but I have encountered some coding problems, which are very annoying. The original data is in .gz format. After I decoded it on windows, I converted it into a file in .txt format, but the...
The problem is this: the client needs to send messages in five different message queues, and the server calls different functions after receiving messages in five queues. I declare on the server that five queues are declared at the same time, but when...
in order to obtain Tencent Cloud s ssl certificate, enter the URL domain name after modifying the non-Wanwang domain name registered by Aliyun. the website cannot be accessed. Has anyone encountered ? nginx is normal: [root@iZwz9hbv3lrr68d8bo5dvp...
I use CSV s dictreader () to read the CSV file. I want to put the value of the duration column in the file into the list duration_list, but the error after running is as follows: the following is the code section: def count_duration (filename,ci...
call the module implemented by C in python to pass parameters between python and C as needed, but the number of parameters is uncertain and can be changed. May I ask how to achieve it? all the interfaces you see now have to determine the number of par...
the newly installed win7 system, Ann python is, the installation package setup comes out of this, which I have encountered before. I forgot how to solve it. ...
Open a chrome browser using selenium, and open a Baidu web page. Using the send_keys () method to fill in the content in the search box, there are the following problems -sharpcoding:utf-8 from selenium import webdriver from selenium.webdriver.chrom...
I need to install both python 2.6 and python 3.6 on my machine. Based on my query, I found that I could use pyenv to do this things, but according to an article I read, python 2 series didn t come with package management tools until python 2.7.9. The...
currently I have a piece of code that spends most of its time on the above two sentences of data filtering in dataframe. temp_df = df [df [ "data_date "] .isin (date_list)] temp = temp_df [rule [2]] [temp_df [ "data_date "] = = d] at present, it tak...
I ve been looking for it for a long time, but I can t find it. 1. After the direct upload of web is completed, the server cannot know whether the file was uploaded successfully, who uploaded it, and the information of the file 2. Using web to dire...
how does a single page reference print background log information? students who develop in the background should know that most of the time, the background log information is printed, but a single page is returned to the same index page in the backgroun...
if you want to use Python to extract the emp data table under the-sharpcscott user in the native Oracle database, execute the following program: import pandas as pd import cx_Oracle import os -sharp os.environ[ NLS_LANG ] = SIMPLIFIED CHINESE_CHIN...
Mini Program needs to display the information of people near the user on the map, but when the amount of data is large, it will stutter. The data will be obtained in segments through the longitude and latitude range, and the data will flash and stutter w...
problem description how can the upload component of antd be compatible with ie8? the environmental background of the problems and what methods you have tried antd upload function turns off automatic upload. There is a non-empty verification, but t...
how does antd treeSelect set the parent node not to be selected? Hope that the parent node is only to expand and fold child nodes, can not be selected as the value of the input box, read the document without this configuration, how to do? ...