编码问题

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python默认是ascill，是不能表示中文的，若涉及encode, 首选要decode成 unicode ，

1：print "哈哈".decode('utf-8').encode('utf-8')

2：a=u'哈哈'

print a.encode('utf-8')

3：#encoding=utf8

import sys
reload(sys)
sys.setdefaultencoding('utf8')

print "哈哈".encode('utf-8')

将unicode编码转化为str:

print u'\xca\xc7'.encode("ISO-8859-1").decode('gbk')

print '\xca\xc7'.decode('gbk')

print '\xb6\xaf\xb8\xd0\xb5\xd8\xb4\xf84G'.decode('gbk')

print u'\xb6\xaf\xb8\xd0\xb5\xd8\xb4\xf84G'.encode("ISO-8859-1").decode('gbk')

print u'\u9648\u6a31\u534e\r\n'.decode('utf-8')

print u'\xca\xc7'.encode("ISO-8859-1").decode('gbk')

print '\xca\xc7'.decode('gbk')

print u'\u9648\u6a31\u534e\r\n'.decode('utf-8')

print u'\u9648\u6a31\u534e\r\n'.encode("utf-8")

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