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...
location ~ ^ bbs .+ .php$ { alias home www esotalk ; rewrite bbs (.* .php?) $1 break; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME home www esotalk$fastcgi_script...
ordinary subclasses inherit the parent class through the extends keyword, so how do the Spring parent container and the Spring MVC child container reflect the parent-child relationship? does the container refer to a class? which class is the Spring co...
as shown in the figure, when the y-axis name is too long, it cannot be displayed completely, and it is not displayed from scratch. It is useless to set left ....
problem description the most basic index.js to App.jsx will report an error as soon as it is finished related codes index.js file import React from react ; import ReactDOM from react-dom ; import { HashRouter as Router } from react-router...
Database Design: db = SQLAlchemy() roles_users = db.Table( roles_users , db.Column( user_id ,db.Integer(),db.ForeignKey( users.id )), db.Column( role_id ,db.Integer(),db.ForeignKey( roles.id )) ) class Role(db.Model,RoleMixin):...