Receiving a string of characters from a serial port

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Receiving a string of characters from a serial port

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This is not a term paper or a diploma project! I haven't been a student for a long time. This is an attempt to write another free program for "home" car diagnostics. And I'm not very strong in Python. So I'm asking for help.

Initial data:

There is a device connected to the computer via a USB port. The computer and the device exchange data in character form. Essentially, this is a classic connection: the device acts as a server, and the computer acts as a terminal. If that means anything to anyone, this device is an OBD-II (On-Board Diagnostics) adapter ELM327.

The system works on a very simple principle — in response to a client (terminal) request (command), the server returns a response. Here is an example of a request-response:

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