Python str and bytes type (PYTHON2/3 for str processing) __python

This article is tested under Python 3, and Python 2.x is slightly different. 1. Str/bytes

>> s = ' 123 '
>> type (s)
str

>> s = B ' 123 '
bytes

2. type conversion between STR and bytes

The conversion between Python str and bytes

The type conversion between STR and bytes is as follows: Str⇒bytes:bytes (S, encoding= ' UTF8 ') bytes⇒str:str (b, encoding= ' Utf-8 ')

In addition, the two can be converted by encoding and decoding, and STR is encoded into bytes format: str.encode (s) bytes format is encoded in str type: Bytes.decode (b) 3. Strings in Python2, Python 3 Down

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Python 2 handles strings as a native bytes type, not Unicode.
All strings in Python 3 are Unicode types.