Bytes type

Data stored on the hard disk, the hard disk can store binary

Binary - "Decimal -" ascii / gbk / utf-8 / unicode

Data stored to the hard disk, will be converted to a corresponding binary coding after storage,

Text - "utf-8 / gbk -" 2 hex

Picture - "jpg / png -" 2 hex

Music - "MP3 / wav -" 2 hex

Video - "MP4 / mov -" 2 hex

 

1 s = "小圆圈"
2 print(s.encode("utf-8"))
3 print(s.encode("gbk"))
4 
5 
6 b'\xe5\xb0\x8f\xe5\x9c\x86\xe5\x9c\x88'
7 b'\xd0\xa1\xd4\xb2\xc8\xa6'

bytes type to 2 constituting a hexadecimal byte (byte) to b '' is identified, byte strings

Py3 default encoding is utf-8 file

pycharm loaded by default files are encoded with utf- 8

. 1 F = Open ( " bytes.txt " , " W " , encoding = " UTF-. 8 " ) Finally, what can keep their encoded

Open the file in binary mode

 

1 f = open("bytes.txt","wb")

1. Character deposit hard to turn bytes

2. Network transmission of characters to become bytes