2020年8月

To transform a unicode string to a byte string in Python do this:

>>> 'foo'.encode('utf_8')
b'foo'

To transform a byte string to a unicode string:

>>> b'foo'.decode('utf_8')
'foo'

  1. To convert a string to bytes.
data = ""               #string
data = "".encode()      #bytes
data = b""              #bytes
  1. To convert bytes to a String.
data = b""              #bytes
data = b"".decode()     #string
data = str(b"")         #string

str to hex:

import codecs
hexlify = codecs.getencoder('hex')
hexlify(b'Blaah')[0]

out:

b'426c616168'

hex to str:

import codecs
decode_hex = codecs.getdecoder("hex_codec")
s = decode_hex(b'426c616168')[0]

out:

b'Blaah'