python exit program gracefully

When learning Python, you always want to implement a program to continue to exit by pressing any key (subject. bat poison), but I have never written it. today I took the time to write it out. I will share it with you. if you need it, you can refer to it for reference. Preface To implement this function, you need to pause the

One day in the group, some students asked, in Python I use input or raw_input have to enter after the input value, how to achieve any key out of the pause function, I did not think much, because the contact Python time is not long, mainly under Linux. Of course, Windows system will be a little bit simpler, Windows system if you install the Python environment, th

Turn from: http://blog.csdn.net/yiliumu/article/details/22995899 System environment: MAC OS X 10.9.2 Python version: 2.7.5 The RMBP of the new beginning, with the Python environment, but put it into the production environment, there are a variety of problems, first and foremost, is the installation module problems, resulting in the normal development, the following is my in the installation of

Scene: Frequently, the following problems are encountered: Many IO busy applications take a multi-threaded approach, but at this point the Python command line does not respond to ctrl-c, and the corresponding Java code is no problem: The code is as follows: public class Test {public static void Main (string[] args) throws Exception {New Thread (New Runnable () {public void Run () {Long start = System.currenttimemillis ();while (true) {try {Thread.Sl

Recently did the Zhejiang University OJ 1011th problem, met a strange thing. This problem I use C + + and PHP do, after the submission is correct. However, after rewriting the Python code with the same logic, the result of the Non-zero Exit code was generated. Most of the results from Python's findings indicate that the program has not caught an exception during

Preface To do this, you need to pause the program, wait and catch a keyboard input from the user, and then continue. Python has built-in libraries to help us with this functionality, but we want to differentiate between Windows and Linux. msvcrt The getch() method in can help implement under Windows, which is to get a key response and return the corresponding character. It is not echoed in the command li

Scene: You will often experience the following problems: Many IO busy applications take a multithreaded approach, but this time you will find that the Python command line does not respond to ctrl-c, and the corresponding Java code is OK: Copy Code code as follows: public class Test { public static void Main (string[] args) throws Exception { New Thread (New Runnable () { public void Run () { Long start = System.currenttimemillis

In a single-layer loop exit, use break to exit, so what is the multi-layer loop? Witty people use the flag identifier in the way, for example:a=['a', 1,2,3,4]b=['b', 1,2,3,4]c=['C', 1,2,3,4]d=['D', 1,2,3,4]break_flag=0 whilebreak_flag==0:y_n=input ('A,yes or No:') ifY_n = ='N': Break elifY_n = ='y': forIinchA:Print(i) whileBreak_flag = =0:y_n_2=input ('B,yes or No:') ify_n_2

1. BreakBreak is to terminate this cycle, such as you many while loop, you write a break in one of the while loop, satisfies the condition, only terminates this while inside the loop, the program jumps to the upper layer while loops continues to go downExample with a simple for loopFor I in range (10): Print ("-----%d-----"%i) For j in Range (10): If J > 5: Break Print (j)When we meet j>5, the second layer of for does no

MultithreadingProgramThe execution sequence of is uncertain. When a sleep statement is executed, the thread is blocked. After sleep is finished, the thread enters the ready state and waits for scheduling. Thread Scheduling selects a thread for execution. The code above can only ensure that each thread runs a complete run function, but the thread startup sequence and the execution sequence of each loop in the run function cannot be determined.Note the following:1. Each thread must have a name. A

Service monitoring program instance written in Python, python monitoring program instance Preface: Install Python2.7 in Redhat Rhel6.4 comes with 2.6, and some machines are found to be python2.4. Download the source code from the python website, decompress it to Redhat, and

(I'm just a brick-and-http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/: 001431611988455689d4c116b2c4ed6aec000776c00ed52000)Now that we know how to start and exit the Python interactive environment, we can formally start writing Python code.Before you write your code, do not use copy-paste to paste the code from the page onto you

well as a Python version supported by MATLAB (currently supported in version 2015a for Python versions 2.7/3.3/ 3.4);2. Add the Python directory to the environment variable (if not added);3. Get the Matlab folder directory, you can enter the Matlabroot command through the MATLAB command Line window to return;4. Install the engine, Windows will install using the

Python Course Selection System Development Program and python Course Selection System Development This program is developed for the Python Course Selection System for your reference. The specific content is as follows: Role:Schools, trainees, courses, LecturersRequirements:1

.MacSimilar to Linux2. My first program: ' Hello world! ' How the 2.1.python program works(1) Python command line runs directly (comes with the idel of the interactive device)Enter Python in the Windows or Linux command line to enter Pyt