Python

#!/usr/bin/env python#-*-Coding:utf-8-*-# @Time: 2018/5/28 18:51# @Author: Stalloneyang# @File: mysql_test.py# @desc:# Connect to DatabaseImport Pymysql.cursors# Connect to MySQL DatabaseConnection = pymysql.connect (host= ' localhost ', port=3306,

Software:Pip Install PYZMQCode:==server.py## Hello World Server in Python# binds REP socket to tcp://*:5555# expects "Hello" from the client, replies with "World"#Import ZMQImport timeContext = Zmq. Context ()Socket = Context.socket (ZMQ. REP)Socket.

This is relatively simple, there is nothing to emphasize, if the JSON is returned directly according to the key value, if the page is to use the HTML lxml module XPath parsing.From lxml import htmlimport jsonclass getnodelist (): def __init__

Securities Bao Www.baostock.com is a free, open-source securities data platform.Provide a large number of accurate and complete securities historical market data, listed company financial data, real-time securities market push services.Acquisition

Set (set) is a very useful data structure. It behaves like a list, except that a set cannot contain duplicate values.This is useful in many cases. For example, you might want to check if the list contains duplicate elements, you have two choices,

1. View the IFRAME1.Top Window: can be directly positioned2.iframe#i: Describes this element on the IFRAME3.iframe display is empty: (ID or name is empty)4. The right side of this see is empty (2-layer iframe)From selenium import WebdriverDriver =

In the previous article, we talked about Diagramfactory and its svgdiagramfactory subclasses and the analogies they used, such as (Diagram,svgdiagram and so on), that were able to implement the functions of the reservation and also conform to the

Use XLWT + xlrd + xlutils to manipulate Excel tables#Coding:utf-8ImportXLWT fromXlrdImportOpen_workbook fromXlutils.copyImportCopyImportOSImportsysreload (SYS) sys.setdefaultencoding ('Utf-8')defSave_excel (my_list): Path=os.getcwd () File_path=

Write in frontRecently coincides with the students near graduation, the late course everyone "expect + bitter force" moment is every morning content review and question and Answer section "near the graduation every day before class with 40-60

#!/usr/bin/env python#_ *_ Coding:utf-8 _*_#Author: Liujindong#datetime: 2018/6/11 16:34‘‘‘This program is a shopping cart program, including user portal, merchant entrance.User Portal: Purchased goods, Balance records.Merchant Entrance: You can add

Methods in the class add the following adornerProperty Method: @property Change the method to a static property of the class, without parentheses when calling. To hide the implementation of the details, for the user, the feeling is to find a dead

1. Introduction Flask Question one:   The process of visiting Baidu? A. Client: Send request message,   request line, request header, request body B. Server: Parse request message, resolve domain name, route matching distribution find corresponding

Throw the question:All solutions of a given array equal to a fixed value, such as the list L = [1, 2, 3, 4, 5], for any combination of the results of 10 of all the answersProblem Analysis:It is actually all permutations of the list, and then the

Python Numpy Shape Basics UsageThe shape function is a function in Numpy.core.fromnumeric, whose function is to read the length of the matrix, for example, Shape[0] is to read the length of the first dimension of the matrix. Its input parameters can

First show the results of the Python crawl:I have to fight for everything first, this time the Queen's vote election contest is no exception, although I am a man ... But I saw the ex-girlfriend unexpectedly already has more than 300 votes ranked

Let's "move" with Python.　　A python variable A is mentioned in all of the above objects, and it is specifically noted that it has a label: tag. In fact, whether it is called "variable" or "tag" does not have a specific requirement, called it

1, Java Environment, configure the appropriate environment variables.See if the configuration is successful as follows:2, Python environment, configure the corresponding environment variables. Includes two paths of Python and python/scriptsSee if

Python Bulk Modify file name #coding: utf-8 import os # all files in the current directory files = os.listdir () for filename in files:# split file name and suffix name portion Span class= "OP" >= os.path.splitext (filename) # compare suffix

# crawl Picture # target site: http://699pic.com/sousuo-218808-13-1.html Import requests from BS4 import BeautifulSoup Import os r = requests.get (' http://699pic.com/sousuo-218808-13-1.html ') # r.content # returns a byte stream Soup =

Callmap = {ts.get_stock_basics: ' d:/dxw/code/all.csv ', ts.get_sz50s: ' D:/dxw/code/50.csv ', ts.get_hs300s: ' D:/dxw/code/300.csv ', ts.get_zz500s: ' D:/dxw/code/500.csv '}Def updatecode (): # Update All index =