运行python提示no module named PIL是怎么回事呀

[aLLLiyyy]

程序版本号：x.x.x

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Screen: Physical size: x
Density: Physical density: x
Override density: x
Device: x
Phone OS: x
Host OS: x
Python: x

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遇到问题：

改进和建议：无

[Gai]

pip install pillow