[help] SublimeText3 save file format can not be saved to .py, can only be saved to file format?

A piece of Python code, click Save, select the python format, but finally show the file format.
searched for something similar, but still couldn"t solve it.
https://blog.csdn.net/dongdou.

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Mar.13,2021

can be solved as follows:
1. Specify the file suffix, such as demo.py :

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2. SublimeText coding Python,.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b313dc-2bd75.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b313dc-2bd75.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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