首先来设置一个原始的字符串，
1 Python 3.2.3 (default, Apr 11 2012, 07:15:24) [MSC v.1500 32 bit (Intel)] on win32 2 Type "help", "copyright", "credits" or "license" for more information. 3 >>> website = 'http://www.cnblogs.com/txw1958/' 4 >>> type(website) 5 <class 'str'> 6 >>> website 7 'http://www.cnblogs.com/txw1958/' 8 >>>
按utf-8的方式编码，转成bytes
1 >>> website_bytes_utf8 = website.encode(encoding="utf-8") 2 >>> type(website_bytes_utf8) 3 <class 'bytes'> 4 >>> website_bytes_utf8 5 b'http://www.cnblogs.com/txw1958/' 6 >>>
按gb2312的方式编码，转成bytes
1 >>> website_bytes_gb2312 = website.encode(encoding="gb2312") 2 >>> type(website_bytes_gb2312) 3 <class 'bytes'> 4 >>> website_bytes_gb2312 5 b'http://www.cnblogs.com/txw1958/' 6 >>>
解码成string，默认不填
1 >>> website_string = website_bytes_utf8.decode() 2 >>> type(website_string) 3 <class 'str'> 4 >>> website_string 5 'http://www.cnblogs.com/txw1958/' 6 >>> 7 >>>
解码成string，使用gb2312的方式
1 >>> website_string_gb2312 = website_bytes_gb2312.decode("gb2312") 2 >>> type(website_string_gb2312) 3 <class 'str'> 4 >>> website_string_gb2312 5 'http://www.cnblogs.com/txw1958/' 6 >>>