python简单的可逆加密程序
简单加密，用python来写写。
#coding=utf-8
'''
Description: 可逆的加密与解密
Environment: python2.5.x
Author:idehong@gmail.com
'''
import os
import sys
class Code(object):
'''可逆的加密与解密'''
def __init__(self, key = "idehong@gmail.com"):
self.__src_key = key
self.__key = self.__get_strascii(self.__src_key, True)
def encode(self, value):
'''加密函数, 加密后为一串数字'''
return "%d" % (self.__get_strascii(value, True) ^ self.__key)
def decode(self, pwd):
'''解密函数'''
if self.is_number(pwd):
return self.__get_strascii( (int(pwd)) ^ self.__key, False )
else:
print 'require number.'
def reset_key(self, key):
'''重新设置key'''
self.__src_key = key
self.__key = self.__get_strascii(self.__src_key, True)
#===============================================================================
# 内部调用接口
#===============================================================================
def __get_strascii(self, value, bFlag):
if bFlag:
return self.__get_str2ascii(value)
else:
return self.__get_ascii2str(value)
def __get_str2ascii(self, value):
ls = []
for i in value:
ls.append( self.__get_char2ascii( i ) )
return long("".join(ls))
def __get_char2ascii(self, char):
'''获取单个字符的acsii码值'''
try:
return "%03.d" % ord(char)
except (TypeError, ValueError):
print "key error."
exit(1)
def __get_ascii2char(self, ascii):
if self.is_ascii_range(ascii):
return chr(ascii)
else:
print "ascii error(%d)" % ascii
exit(1)
def __get_ascii2str(self, n_chars):
ls = []
s = "%s" % n_chars
n, p
相关文档：
>>> class objA:
... pass
...
>>> A = objA()
>>> B = 'a','V'
>>> B
('a', 'V')
>>> C = 'a string'
>>> print instance(A,objA)
Traceback (most recent call last):
File "<stdin>", line 1, in < ......
>>> import copy
>>> a = [1,2,3,4,['a','v']]
>>> b = a
>>> b
[1, 2, 3, 4, ['a', 'v']]
>>> c = copy.copy(a)
>>> c
[1, 2, 3, 4, ['a', 'v']]
>>> d = copy.deepcopy(a)
>>> d
[1, 2, 3, 4, ['a', 'v']]
>>> a.append(5) ......
import pymssql
#connect database
conn=pymssql.connect(host="192.168.1.28",user="boomink",password="boomink",
database="boomink")
cur=conn.cursor()
print '========================================'
cur.execute("exec Orders_GetTest1 @Valu ......
原文
Python和C分别有着各自的优缺点，用Python开发程序速度快，可靠性高，并且有许多现成模块可供使用，但执行速度相对较慢；C语言则正好相反，其执行速度快，但开发效率低。为了充分利用两种语言各自的优点，比较好的做法是用Python开发整个软件框架，而用C语言实现其关键模块。本文介绍如何利用C语言来扩展Python的功 ......
