PIL是Python平台事实上的图像处理标准库，支持多种格式，并提供强大的图形与图像处理功能。
PIL 模块全称为 Python Imaging Library，是python中一个免费的图像处理模块。
PIL（Python Imaging Library）是Python中一个强大的图像处理库，但目前其只支持到Python2.7
pillow是PIL的一个分支，虽是分支但是其与PIL同样也具有很强的图像处理库。
安装PIL
1.确认你的版本
2.如果是Python 2.7 直接 pip install PIL
3. 如果是Python 3.7 用 pip install pillow
4.打开pycharm导入模块尝试是否标红
>>> from pil import Image
>>> from PIL import Image
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'PIL'
>>>
>>> import pil
>>> import PIL
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'PIL'
pillow官网：
About pillow
Goals
The fork author’s goal is to foster and support active development of PIL through:
- Continuous integration testing via GitHub Actions, AppVeyor and Travis CI
- Publicized development activity on GitHub
- Regular releases to the Python Package Index
License
Like PIL, Pillow is licensed under the open source HPND License
Why a fork?
PIL is not setuptools compatible. Please see this Image-SIG post for a more detailed explanation. Also, PIL’s current bi-yearly (or greater) release schedule is too infrequent to accommodate the large number and frequency of issues reported.
What about PIL?
Note
Prior to Pillow 2.0.0, very few image code changes were made. Pillow 2.0.0 added Python 3 support and includes many bug fixes from many contributors.
As more time passes since the last PIL release (1.1.7 in 2009), the likelihood of a new PIL release decreases. However, we’ve yet to hear an official “PIL is dead” announcement.
REF
https://www.jianshu.com/p/e8d058767dfa
