Python Learning character encoding

The string involves encoding: ASCII GBK gb2312 Unicode uft-8

For English characters ASCII (can be regarded as a subset of Utf-8), Chinese with gbk/gb2312;

Unicode: The world's unified computer system coding (in memory), but the storage is a waste of space, so save to the hard disk or output to view with uft-8. That is, when you open the reading with Notepad or browse the Web page is unicode-"Tuf-8, Because Notepad and the browser server system are Unicode types

Uft-8:ptthon when saving the source code, it is important to specify Save as UTF-8 encoding. At the beginning of the program, it is stated that UTF-8 encoding does not imply that your .py file is UTF-8 encoded, which is set by the text editor's settings-encoding type to use UTF-8 Without BOM encoding. If the .py file itself uses UTF-8 encoding and also declares # -*- coding: utf-8 -*- , open a command prompt to verify that Chinese is supported

In Python version 3, strings are Unicode-encoded and support Chinese

Python provides a ord(‘字符’) coded integer representation of the function to get the character, and the chr() function converts the encoding to the corresponding character

The string type of Python is a str Unicode representation in memory, a character that corresponds to several bytes, and a Unicode representation of the str pass. encode(‘ASCII’) Method can be encoded as the specifiedbytes

bytesType of data is represented by a b prefixed single or double quotation mark, used for string transmission over the network, or saved to disk

Len (' abc ') and Len (b ' ABC ') represent the number of characters and bytes respectively.

Formatted output: internal and external 22%

>>> ‘Hi, %s, you have $%d.‘ % (‘Michael‘, 1000000) ‘Hi, Michael, you have $1000000.‘

Python Learning character encoding