1.打開配置文件
sudo nano /boot/config.txt
打開以下選項
"dtparam=i2c_arm=on"
ctrl + o 保存
ctrl + x 退出
2.刷新配置文件
sudo raspi-config
3.打開 I2c選項
4.重啟
5.再次運行
參考：
python smbus IOError: [Errno 2] No such file or directory
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