Web Development Web Development Table of contents.If the OP wants to use Bullseye rather than Buster, has installed Python 2 on Bullseye, I would recommend removing Python 2, though I would more strongly recommend reinstalling Bullseye from release media and not installing Python 2 to get back to being on a firm foundation.
I am confident I encountered the exact problem the OP has, that I couldn't find a Serial package for Python 2 using what used to work, and because some of my Python 2 code had it as a dependency I decided there were two pragmatic choices stay on Buster and keep using Python 2, or move to Bullseye and port my code to Python 3, abandon hope of being able to use Python 2 on Bullseye. Having Python 2 but not being able to use it is how I predicted things would end so I wasn't overly surprised when that did happen. Python 2 may be available for use on Bullseye but that doesn't mean that it is as usable as it was, that all packages code may need will be available. That's not surprising as Python 2 became EOL at the start of 2020 and most providers had decided to move to supporting only Python 3, to stop providing modules, packages and support for Python 2. I can't remember all the issues I encountered but they definitely included problems like the OP is reporting inability to find modules needed to keep Python 2 code running under Bullseye. I did, but it was a while ago, probably the end of 2021 when Bullseye first became available on a Pi. I have not tried to install Python2 though. Moreover, whenever i check the /dev/tty ports, there is no ACM0 detected. Unfortunately, the code given in the video from the link i attached in the original post, produces an error which is the missing serial module. then, the rpi would be the one to store the sensor data from arduino to the database. A soil moisture sensor is connected to the arduino, and instead of using a wifi module to transfer sensor data into a database, im trying to connect to raspberry pi, do serial communication so that the sensor data will be sent to the RPI. I'm really sorry if I'm not able to explain clearly.
Seems like the OP does need to tell us what they are using, what they are doing, what they have done. Type "help", "copyright", "credits" or "license" for more information.
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