Python Web简单加法器的实现--Python

坚持写博客来记录学习过程，哪怕学习的东西多么简单!下面是python中cgi相关知识。

Template.py：(模板引擎文件)

#模板引擎
def start_response(resp="text/html"):
　　return \'Content-type: \'+resp+ \'\n\n\'

def start_form(the_url="",form_type="POST"):
　　return \'<form action="\'+the_url+\'"method="\'+form_type+\'">\'

def end_form(submit_msg="求和"):
　　return \'<input type="submit" value="\' +submit_msg+\'">\'

def input_label(name,placeholder="",value="",readonly=None):
if readonly is None:
　　return \'<input type="text" size="20" value="\'+value+\'" name="\'+name+\'" placeholder="\'+placeholder+\'">\'
else:
　　return \'<input type="text" size="20" value="\'+value+\'" readonly="\'+readonly+\'" name="\'+name+\'" placeholder="\'+placeholder+\'">\'

def context(word):
return word

def start_div(align,style):
　　return \'<div align="\'+align+\'"style="\'+style+\'">\'
def end_div():
　　return "</div>"
def img(src):
　　return \'<img src="\'+src+\'">

main.py：

import cgitb,cgi
from Template import *
form1=cgi.FieldStorage()
num1=form1.getvalue("Num1")
num2=form1.getvalue("Num2")
num3=None
if not num1 is None and not num2 is None:
　　num1=int(num1)
　　num2=int(num2)
　　num3=num1+num2
# print("Content-type:text/html \n\n")
print(start_response())
# print(img("../views/add.png"))
# print(start_div("center","margin-top:40px;"))
# print(img("../views/add.png"))
# print(end_div())
print(start_div("center","margin:50px 0 0 0"))
print(start_form())
print(input_label("Num1","参数1"))
print("+")
print(input_label("Num2","参数2"))
print("=")
if num3 is None:
　　print(input_label("Num3","结果","","readonly"))
else:
print(input_label("Num3", "结果",str(num3), "readonly"))
print(end_form())
print(end_div())