Environment configuration in python

The default environment in

python is 2.7, but now I want to deal with it in 3.5 environment.

Mar.13,2021
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-64f5-1b3a742-2ba60.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3a742-2ba60.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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