After building the model with modeling software such as blender, how does the model interact with the background? (or how to apply the model to the program)

I want to make a 3D character with python, but I don"t know what to do next after modeling with the corresponding modeling tools.

Sep.23,2021
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-64f5-1b3f176-2c461.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f176-2c461.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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