pyserial: pySerial (Python Serial Port Extension) pyserial: pyserial: This module encapsulates the access for the serial port. It provides pyserial: backends for Python running on Windows, Linux, BSD (possibly any pyserial: POSIX compliant system), Jython and IronPython (.NET and Mono). The pyserial: module named “serial” automatically selects the appropriate backend. pyserial: pyserial: pyserial: pyserial: pyserial: