python pubsub example

Simple Example of MVC mode in Python design mode, and mvc mode in python Design Mode This article describes the MVC mode of the Python design mode. We will share this with you for your reference. The details are as follows: 1. Brief Introduction Mvc mode the model-view-controller pattern The mvc pattern is a design pat

Python: simple example of counting the number of lines of code, and number of lines of python Python simple example of counting code lines When sending the test, we found that we needed to count the number of lines of code. So I wrote a small program to count the number of l

This article describes how to use a Python thread to solve the producer consumption problem, including providing answers to some problems that are easy to occur in the use of the thread, for more information about how to use the Python thread to solve the producer-consumer problem in Python, see. This problem is not as difficult as they mentioned at school. If y

#-*-Coding:utf-8-*-# python:2.x__author__ = ' Administrator 'Import Select,socket,sys,queue# function: A notification that waits for input or the output channel is ready #select io monitoring function, portable interface is posix function select (), Unix and windows all support this function, poll () Span style= "font-family: the song Body;" > only unix, There are some for unix specific variant options #select () is the underlying

Example of how to calculate the sum of series in Python: python Series This article describes how to calculate the number of series and in Python. We will share this with you for your reference. The details are as follows: Problem: Input There are multiple groups of input data. Each group occupies one row and consi

This article mainly introduces an example of the Array usage of Python data structures. it describes the common usage of Array in detail and has good reference value, for more information about the Array usage of python data structures, see the examples in this article. The specific method is as follows: import ctypes class Array: def __init__(self, size):

This article describes how to use the pygame module in python and how to use the pygame module through graphic rendering. it has good reference value, you can refer to the following example to describe how to use the pygame module in python. The specific method is as follows: import pygame, sys from pygame.locals import * #set up pygame pygame.init() windowSu

Python-based password strength detector example, python Detector This article describes the Python-implemented password strength detector. We will share this with you for your reference. The details are as follows: Password strength How can I quantify the password strength? A password can be of the following types: len

Similar to the java properties FileXml fileCopy codeThe Code is as follows:Db_config.ini[Baseconf]Host = 127.0.0.1Port = 3306User = rootPassword = rootDb_name = evaluting_sys[Concurrent]Processor = 20 Corresponding python code Copy codeThe Code is as follows:#! /Usr/bin/python#-*-Coding: UTF-8 -*-# Author: lingyue. wkl# Desc: use to db ops#---------------------#2012-02-18 created #---------------------Impor

Python uses the Backtracking Method subset tree template to solve the full arrangement problem example, python backtracking This article describes how Python solves the full arrangement problem based on the subset tree template of the Backtracking Method. We will share this with you for your reference. The details are

Python keyword and or usage example, python keyword andor The and Expression in python is calculated from left to right. If all values are true, the last value is returned. If false exists, the first value is returned. Or is also a calculated expression from left to return the first true value.Copy codeThe Code is as

Python Regular Expressions use example sharing and python Regular Expressions As a concept, regular expressions are not unique to Python. However, regular expressions in Python are slightly different in actual use. This article is part of a series of articles about

Python uses a regular expression to match the start of a string and print the example. python Regular Expression This example describes how to use a regular expression to match and print a string. We will share this with you for your reference. The details are as follows: Import res = "name = z1hangshan username = ff

+ = Reg *W2 $DW + = Reg *W141 142 #perform a parameter update143W + =-step_size *DW144b + =-step_size *DB145W2 + =-step_size *dW2146B2 + =-step_size *DB2147 #evaluate training set accuracy148Hidden_layer = Np.maximum (0, Np.dot (X, W) +b)149Scores = Np.dot (Hidden_layer, W2) +B2 MaxPredicted_class = Np.argmax (scores, Axis=1)151 Print 'Training accuracy:%.2f'% (Np.mean (Predicted_class = =y)) the #plot the resulting classifier153H = 0.02154X_min, X_max = x[:, 0].min ()-1, x[:, 0].max () + 1

This article mainly introduces how to save a webpage to a local python instance. For more information about how to save a webpage to a local machine, see the following python example. The code is as follows: # Coding = UTF-8_ Auther _ = 'xianbao'Import urllibImport OSDef reporthook (blocks_read, block_size, total_size ):If not blocks_read:Print 'open conne

An interesting example of Python decorators and an exploration of python decorations Miss Liao's tutorial is too advanced to understand. Click to open the link. def deco_functionNeedDoc(func): if func.__doc__ == None : print func, "has no __doc__, it's a bad habit." else: print func, ':', func.__doc__, '.' return func@deco_functionNeedDocd

Python constructs a custom method to beautify the dictionary structure output example, python dictionary Example:Copy codeThe Code is as follows:D = {"root": {"folder2": {"item2": None, "item1": None}, "folder1": {"subfolder1": {"item2 ": none, "item1": None}, "subfolder2": {"item3": None }}}} Beautiful output: Observe the following features:1. the keys of the

Read a blog, very good. Http://www.cnblogs.com/turtle-fly/p/3280519.htmlThe standard output (sys.stdout) corresponds to print (printing), and the standard input (Sys.stdin) corresponds to the input (receive input) operation, and the standard error output and standard output are similar to print (printing).Python's most basic operation-printing:1The effect is to write 1 in the console (command line) to let you see.In fact, his operation can be understood as: the console (command line) as a board,

: global s s = Socket.socket () host = Socket.gethostname () S.bind ((host, 60123)) except: print (' already have an Instance ... ') return None return func (*args,**kwargs) return fun@applicationinstancedef main (): While True: print ' running ... ' time.sleep (1) if __name__ = = "__main__": Main ()Iv. Summary(1) Daemon and single script running in the actual application of the more important

Python built-in function usage example tutorial, python built-in instance tutorial This article briefly analyzes the usage of built-in functions commonly used in Python and shares them with you for your reference. The specific analysis is as follows: Generally, many useful functions are built in