ChromeDriver2.38 ChromeDriver usr bin : ...
supervisor is a process management tool under Linux, which can manage the services running in the foreground, while the services in the background need to be transformed into foreground before they can be managed through supervisor. The celery process s...
< H2 > set up two tables as follows. How can curd change the two tables at the same time, that is, query the data of the two tables? in addition, do you use this method much in the actual project < H2 >? < H2 > my_class < H2 > CREATE TABLE `my_class`...
after running python library, with Google api installed, I reported a connection timeout error. Is my agent not set up properly? But it s okay for me to go to google? I use pycharm from oauth2client.service_account import ServiceAccountCredentials fsm...
you need to use Python to implement an algorithm to calculate the area surrounded by two tracks in three-dimensional space, as follows: ,(x,y,t): but there is a problem with this, that is, how the sequence of points of the two tracks form a triang...
def getArrayMean (data_array): mean_list = [] for i in range(data_array.shape [1]): row_mean = np.mean(data_array[:,i:i+1]) mean_list.append(row_mean) return mean_list def drawScatter (setosa, versicolour,para_list): plt.scatter(setosa, vers...
flask cannot get ajax send post data var data1= { name : kikay , } var data = JSON.stringify (data1) ajax ( POST , http: localhost:5000 login ,null, data1, function (r) { console.log (data,r.status,r.response) }) send ajax @ app.route...
for index, row in train_set.iterrows (): S = str(row[ ]) M = re.finditer(match_target, S) part_index_list = [(m.start(), m.start() + len(m.group()) - 1) for m in M] part_list = [m.group() for m in M] After run, the part_index_list list has a norma...
every Mini Program has the same function. In the future, we will rely on plug-ins to distinguish the functions of each Mini Program, but I want to use a set of interfaces. How should this interface be developed and deployed? ...
how can I release a large number of dataframe, for reading tables in the middle when I run out of them? Thank you ...
when beginner python, sees metaclass, type is a metaclass when the generated class object is returned in the _ _ new__ method of metaclass, so what s the difference between return type.__new__ (cls, name, bases, attrs) and return type (cls, name, ...
1. Use version 1.2.5 of the mysqldb library. An error was reported when inserting the database in the pipeline file of scrapy. 2. pipelineimport MySQLdbimport os.path class ProjectPipeline(object): 3.scrapy import MySQLdbimport os.path class Weathe...
< H2 > db_demo3.py < H2 > from flask import Flask from flask_sqlalchemy import SQLAlchemy import config app = Flask(__name__) app.config.from_object(config) db = SQLAlchemy(app) db.create_all() @app.route( ) def index(): return hello world...
how to use js post to django data in django to receive JS similar to this str = {"student":[{"number":"0","name":"a"}]} ; obj = JSON.parse(str); look at the data in chrome like this [student][0][...
the formatting shortcut of pycharm will automatically wrap long lines. I want to modify this rule. Can you customize the rules of pycharm formatting? ask for advice ...
1. You need to use the paramiko module to send two commands to the switch. The first screen-length disable is used to cancel the single-screen echo, and the second display cur is used to output the contents of the configuration file. There are t...
A piece of Python code, click Save, select the python format, but finally show the file format. searched for something similar, but still couldn t solve it. https: blog.csdn.net dongdou. ** * * ...
recently learn crawler, use selenium to crawl the home page picture of the website, test to get the url, of the picture, but always report the following error, can not find the reason, hope the hero to help! the code is as follows: item.py import sc...
use the following command to launch the flask application gunicorn-- workers=2 hello:app-b 0.0.0.0 workers=2 hello:app 80 in ubuntu, but the above command cannot make the application take effect immediately. You need to restart each time to see the mod...
I built a flask project application in visual studio code, including a very simple flask application: from flask import Flask app = Flask(__name__) @app.route( ) def index(): return "Hello world!" there is a venv virtual environ...
for example, if you do a SQL query of statistical data, the tables come from all directions and have different conditions. If multiple select count are efficiently implemented in a SQL statement, only SQL is considered here. For example, sql is as follo...
excuse me, how should I write the html5 drag-and-drop constraint? For example, if you don t want to drag something out of the frame, here are two pictures. What should I do with this? if you can t constrain the area of drag and drop, then start ...
import time from selenium import webdriver from xvfbwrapper import Xvfb vdisplay = Xvfb() vdisplay.start() from selenium.webdriver.chrome.options import Options chrome_options = Options() chrome_options.add_argument("--no-sandbox") chrome_opt...
how Gitbook Editor modifies fonts I find the default font uncomfortable and paranoid. Thank you. Novice, English is not good, BD is not enough. ...
how to understand the variable r here, and the function r () const User = r = > require.ensure ([], () = > r (require ( @ components User.vue )), chunkname3 ) ...