python3中string和bytes转化

创建bytes类型

a=bytes([1,2,3,4])a=bytes('hello', 'ascii')print(a)

string与bytes相互转化

• 按uft-8形式编码

  a=’hello world’
  b=a.encode(encoding=’utf-8’)
  print(type(a), type(b))
  c=b.decode(encoding=’utf-8’)
  print(c, type(c))

• 按gbk方式编码

  x=a.encode(encoding=’gbk’)
  print(x, type(x))
  y=x.decode()
  print(y, type(y))