coding:
Plain text: the information we can directly read from the computer called plaintext
Conversion: The plain line represents a call into the other 'coding', the other line to convert the plaintext called 'decoding'
py2 the encoding: (str and unicode two kinds)
The python bytes are encoded corresponding to str, but py2 will automatically be converted into code bytes unicode coding mode
Two py2 encoded Chinese stitching to be wrong
py3 Code: