Character encoding and transcoding, character encoding and Transcoding

Character encoding and transcoding, character encoding and Transcoding

Note:
1. In python2, the default encoding is ASCII, and in python3, the default encoding is unicode.
2. unicode is divided into utf-32 (4 bytes), UTF-16 (2 bytes), UTF-8 (1-4 bytes), so UTF-16 is now the most commonly used unicode version, however, UTF-8 is stored in the file because utf8 saves space.
3. encode in py3 converts the string type to the bytes type during transcoding, And the decode converts the bytes type back to the string type during decoding.
 

Applicable only to py2