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Django at a glance

"How to write a database-driven Web app with Django?"

workflow:

Welcome to this lesson on Data Types and Operators! You'll learn about:

Data Types: Integers, Floats, Booleans, Strings, Lists, Tuples, Sets, Dictionaries
Operators: Arithmetic, Assignment, Comparison, Logical, Membership, Identity
Built-In Functions, Compound Data Structures, Type Conversion
Whitespace and Style Guidelines

Python defines type conversion functions to directly convert one data type to another.

int(a,base) : This function converts any data type to integer. ‘Base’ specifies the base in which string is if data type is string.

HTTP协议（HyperText Transfer Protocol，超文本传输协议）是因特网上应用最为广泛的一种网络传输协议，所有的WWW文件都必须遵守这个标准。

HTTP是一个基于TCP/IP通信协议来传递数据（HTML 文件, 图片文件, 查询结果等）。

内容列表

AJAX = Asynchronous JavaScript and XML（异步的 JavaScript 和 XML）。

AJAX 不是新的编程语言，而是一种使用现有标准的新方法。

AJAX 是与服务器交换数据并更新部分网页的艺术，在不重新加载整个页面的情况下。

有时候我们需要在前台用 get 或 post 方法提交一些数据，所以自己写一个网页，用到 html 表单的知识。

比如写一个计算 a和 b 之和的简单应用，网页上这么写

<!DOCTYPE html>

	var indexOfMinimum = function(array, startIndex) {
	// Set initial values for minValue and minIndex,
	// based on the leftmost entry in the subarray:
	var minValue = array[startIndex];
	var minIndex = startIndex;

	// Loop over items starting with startIndex,
	// updating minValue and minIndex as needed:
	for (var i=minIndex+1; i<array.length;i++){
	if(array[i]<minValue){

	import java.io.*;
	import java.util.*;

	public class Solution {

	public static void main(String[] args) {
	/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
	Scanner scan = new Scanner(System.in);
	int lineNb = 0;
	while(scan.hasNext()){