I am trying to downgrade my python version from 3.7 to 3.6 on raspberry pi4. is need to uninstall 3.7 first and reinstall python3.6?
does anyone know of a way to solve this?
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you don't have to unistall old version - you can have many different versions at the same time and run `python3.7` or `python3.6` and `pip3.7` or `pip3.6`. If system uses old version for some functions then uninstalling old version you may crash system. And most Linux use Python for some functions. – furas Jul 15 '20 at 01:44
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main question: why do you need 3.6 ? What is wrong with 3.7 ? – furas Jul 15 '20 at 01:46
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@furas beacuse i have a sensor(vl53l0x), dependant with smbus lib, but smbus seems doesn't support python3.7, so i need to downgrade python to 3.6 (i am sure it work on python 3.6) – A.Yang Jul 15 '20 at 02:05
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I found [smbus2](https://pypi.org/project/smbus2/) which probably works with Python 3.7 . And you really need 3.6 then don't downgrade but install 3.6 together with 3.7 - they keep modules in different folders, and they use different programs `python3.7` , `python3.6` and `pip3.7`, `pip3.6` – furas Jul 15 '20 at 02:41
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@furas it's work, thanks a lot!! – A.Yang Jul 15 '20 at 05:19