"Python3" character decoding and encoding

1.the variable declared by PY3 is Unicode encoded by default , and the default file encoding is Utf-8

2.unicode is divided into utf-32 (4 bytes), utf-16 (Accounting for 2 bytes), Utf-8 (1-4 bytes), so utf-16 is now the most commonly used Unicode version, but in the file is still utf-8, because the Utf-8 save space

3. In the Py3 encode, at the same time transcoding will also change the string into bytes type, decode in the decoding will also turn bytes back to string, in Py3, str and bytes made a clear distinction

Str=u ' Good study day up ' #加u表示unicode, default is Unicode

Utf-8_to _GBK = Str.decode (' Utf-8 '). Encode (' GBK ')

"Python3" character decoding and encoding