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如何修复 python-can can.exceptions.CanInterfaceNotImplementedError: The serial module is not installed

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问题

你正在使用 python-can 库并遇到以下错误：

error_message.txt
You won't be able to use the slcan can backend without the serial module installed!
Traceback (most recent call last):
  File "/home/uli/TestCAN.py", line 10, in <module>
    bus = can.interface.Bus(bustype='slcan', channel=slcan_device, bitrate=baud_rate)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.pyenv/versions/3.11.9/lib/python3.11/site-packages/can/util.py", line 379, in wrapper
    return f(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^
  File "/home/uli/.pyenv/versions/3.11.9/lib/python3.11/site-packages/can/interface.py", line 135, in Bus
    bus = cls(channel, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.pyenv/versions/3.11.9/lib/python3.11/site-packages/can/interfaces/slcan.py", line 98, in __init__
    raise CanInterfaceNotImplementedError("The serial module is not installed")
can.exceptions.CanInterfaceNotImplementedError: The serial module is not installed

解决方案

错误消息很明确：你需要安装 serial 模块。可以通过 pip 安装：

install_pyserial.sh
pip install pyserial
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