problem description just learned python GUI, using tkinter when you use a button of Tk () to open a Toplevel , you can generally open it indefinitely. How to automatically close the toplevel before creating a new project? my gui looks like ...
prepare C files to be compiled using C extensions -sharpinclude <stdio.h> -sharpinclude <stdlib.h> -sharpinclude <unistd.h> -sharpinclude <string.h> -sharpinclude <errno.h> -sharpinclude <netdb.h> -sharpinclude <n...
because of the project requirements, it is necessary to build a multithreaded and multi-python interpreter, that is, a python interpreter is generated in each thread to execute the python script. after querying the data, I want to initialize python in ...
the reason has been found. The order of variables from append to the data box will be adjusted automatically when the column tag of DataFrame is not set beforehand. df = pd.DataFrame() series=pd.Series([3,4,1,6],index=[ b , a , d , c ]) df=df.a...
when I call chatterbot and have a conversation with a trained bot, there is always a "No value for search_text was available on the provided input " sentence between the conversations, just like the one in the picture: : "No value for search_text w...
is similar to the function of snippets in a chrome browser. or can chrome execute js when appium controls the chrome browser? in fact, the purpose of my js is to modify the pages of a particular website, not to program on my phone. of course, if th...
pandas6Excel ...
import numpy as np import matplotlib.pyplot as plt -sharp labels = np.array([ 3 , 5 , 6 , 3 , 1 , 3 , 3 , 2 ]) -sharp dataLenth = 8 -sharp data = np.array([3,5,6,3,1,3,3,2]) angles = np.linspace(0, 2*np.pi, dataLenth, endpoint=False) dat...
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...
const spec = [ { label: , content: [ , , ] }, { label: , content: [ , , ] }, { label: , content: [ , , ] } ]; specdatas,spec0spec1spec2spec27 const datas = [ { spec0: , spec1: , ...
because I now default to python2.7 every time, now I want to start with python3 every time, ask for advice, how to default python3 now? Because of many coding problems ...
recently, I want to use node to write a crawler tool. On the one hand, I want to nodejs, and on the other hand, I think crawler is a good example to improve the front-end knowledge. But I don t have much work experience, and I don t know or use crawle...
encountered a very contradictory problem, I have a website need to crawl it, using POST mode, the form contains VIEWSTATE, now the problem is that the browser query can see VIEWSTATE, but how do I know in advance with the code? ...
I typed according to the code of the course. Where is the error import pygame ? pygame.init () < H1 > create a game window < H1 > screen = pygame.display.set_mode ((480,700)) < H1 > draw background image < H1 > < H1 > 1 load image data < H1 >...
I typed according to the code of the course. Where is the error import pygame ? pygame.init () < H1 > create a game window < H1 > screen = pygame.display.set_mode ((480,700)) < H1 > draw background image < H1 > < H1 > 1 load image data < H1 >...
for example, the on-screen comments of the LVB platform are directly refreshed at the front end, and there are no requests. How to collect data like this? ...
I = 1 while I < = 5: result = 1 while result <= i: print("*", end="") result += 1 print(" %d " % i) print("") i += 1 1. Why is the while (result) loop nested in the box whose variables start at...
do not understand why this function does not write break will loop infinitely, ask for help def diedai (size): size=size+1 print("size=",size) while (size<=2): print("size=",size) diedai(size) -sharpbreak diedai (1)...
two columns of existing data, as shown in the following figure: then I want to delete the data in column a that matches a regular expression (such as the beginning of 0002). How should I write it? add: the above is just an example, because it doe...
var cnt = 0; function change(target, coins, usable) { coin = coins.shift(); if(coins.length==0) { if(target coin<=usable) { cnt += 1; } } else{ for(let i=0; i<=target coin; iPP) { chan...
public class TestThread { private static int = 0; private volatile static int volatile = 0; public static void main(String[] args) { new Thread(){ public void run(){ System.out.println(""); while(==0&&v...
recently, when I learned to use Karma but counted the test coverage, I found that the coverage was very low. Looking at the results, I found that because he also counted a tool class I introduced (such as the following figure), how to set up to ignore t...
because the Internet of things backend b has already provided rest api, my project wants to use the rest api interface provided by the Internet of things backend b, but I also hope that some business logic can be managed independently on the backend a. ...
above: now there is a need like this: when there is a conflict in the schedule, the schedule of the conflict should be evenly divided into the width, and the full width should be occupied when there is no conflict. now my implementation is to use ...