Python Base64转码解码

Python Base64 提供了好几种方法例如：
encode,
decode,

encodestring,
decodestring,

b64encode,
b64decode,

standard_b64encode
standard_b64decode

urlsafe_b64decode,
urlsafe_b64encode。

1. encode, decode
   用来转码和 解码文件的,也可以对StringIO里的数据做编解码

   
   #读取文件进行编码
   
   inputRead = open('/Users/Mr_Chen/Desktop/test.jpeg','rb')
   outputWrit = open('/Users/Mr_Chen/Desktop/testEncode.txt','wb')
   
   #编码文件
   
   base64Test = base64.encode(inputRead,outputWrit)
   
   
   
   #读取文件后进行解码
   
   inputRead = open('/Users/Mr_Chen/Desktop/testEncode.txt','rb')
   outputWrit = open('/Users/Mr_Chen/Desktop/testDecode.jpeg','wb')
   
   #解码文件
   
   base64Test2 = base64.decode(inputRead,outputWrit)

2. encodestring, decodestring,
   对字符串进行转码，解码

   import base64
   str1 = 'This is Test String'
   
   
   #对字符串进行转码
   
   enTest = base64.encodestring(str1)
   print '转码后：',enTest
   
   
   #对字符串进行解码
   
   deTest = base64.decodestring(enTest)
   print '解码后：',deTest

3. b64encode,b64decode,
   （base64 模块提供了 b16encode,b16decode，b32encode,b32decode）
   用来编码和解码字符串，并且有一个替换符号字符的功能。当base64编码后的字符除 了英文字母和数字外还有三个字符 + / =,用提替换到 +/= 这些字符

   
   # -*- coding:utf-8 -*-
   
   import  base64
   
   
   
   #读取文件进行base16转码
   
   inputRead = open('/Users/Mr_Chen/Desktop/test.txt','rb')
   base16Test = base64.b16encode(inputRead.read())
   inputRead.close()
   print  'base16 Encode:',base16Test
   
   
   #进行base16解码
   
   base16Test2 = base64.b16decode(base16Test)
   print 'base16 Decode:',base16Test2
   
   
   
   
   #读取文件进行base32转码
   
   inputRead2 = open('/Users/Mr_Chen/Desktop/test.txt','rb')
   base32Test = base64.b32encode(inputRead2.read())
   inputRead2.close()
   print  'base32 Encode:',base32Test
   
   
   #进行base32转码
   
   base32Test2 = base64.b32decode(base32Test)
   print 'base32 Decode:',base32Test2
   
   
   
   
   #读取文件进行base64转码
   
   inputRead3 = open('/Users/Mr_Chen/Desktop/test64.txt','rb')
   base64Test = base64.b64encode(inputRead3.read())
   inputRead3.close()
   print  'base64 Encode:',base64Test
   
   
   #进行base64解码
   
   base64Test2 = base64.b64decode(base64Test)
   print 'base64 Decode:',base64Test2

4. standard_b64encode，standard_b64decode
   进行标准的base64,同样可以进行string ,文件的转码，解码
   使用效果和encodestring 相同

   
   # -*- coding:utf-8 -*-
   
   
   import base64
   
   text = 'This is Test String!'
   
   
   #进行转码
   
   baseStand = base64.standard_b64encode(text)
   print 'baseStand:',baseStand
   
   
   #进行解码
   
   basee = base64.encodestring(text)
   print 'baseEncodeString:',basee
   

5. urlsafe_b64decode,urlsafe_b64encode
   主要进行对url 的安全转码

   
   # -*- coding:utf-8 -*-
   
   
   import  base64
   
   
   text = "http://www.baidu.com"
   
   
   #baseurl Encode 转码
   
   baseUrl = base64.urlsafe_b64encode(text)
   print "baseUrlEncode:" ,baseUrl
   
   
   #baseurl Encode 解码
   
   baseUrl2 = base64.urlsafe_b64decode(baseUrl)
   print "baseUrlDecode:" ,baseUrl2