编码的补充

1.将unicode编码转化成utf-8，gbk

s=‘Alex’

s1=s.encode('utf-8')  #将unicode转换成utf-8

s2=s.encode('gbk')  #将unicode转换成gbk

s3=s.decode('utf-8') #将utf-8转换成unicode

s4=s.decode('gbk') #将gbk转换成unicode

2.将gbk转换成utf-8

先将gbk解码成unicode，再将unicode编码成utf-8

s=‘Alex’

s1=s.encode('gbk')

s2=s.decode('gbk').encode('utf-8')