找不到模塊PIL，但已安裝並更新

Question

我試圖在Mac OS X上下載有刮痕的圖像，它返回以下錯誤消息：

ModuleNotFoundError: No module named 'PIL'
$ pip install image
Requirement already satisfied: image in /Library/Python/2.7/site-packages (1.5.27)
Requirement already satisfied: django in /Library/Python/2.7/site-packages (from image) (1.11.16)
Requirement already satisfied: pillow in /Library/Python/2.7/site-packages (from image) (5.3.0)
Requirement already satisfied: pytz in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from django->image) (2013.7)

讓我們嘗試安裝映像包：

$ pip install image
Reqfuirement already satisfied: image in /Library/Python/2.7/site-packages (1.5.27)
Requirement already satisfied: django in /Library/Python/2.7/site-packages (from image) (1.11.16)
Requirement already satisfied: pillow in /Library/Python/2.7/site-packages (from image) (5.3.0)
Requirement already satisfied: pytz in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from django->image) (2013.7)

更新點子？

pip install --upgrade pip
Requirement already up-to-date: pip in /Library/Python/2.7/site-packages/pip-18.1-py2.7.egg (18.1)

通過自制軟件安裝Python ist

通過sudo進行PIP： sudo pip install image

還嘗試了：

easy_install pip
Password:
Searching for pip
Best match: pip 18.1
Processing pip-18.1-py2.7.egg
pip 18.1 is already the active version in easy-install.pth
Installing pip script to /usr/local/bin
Installing pip2.7 script to /usr/local/bin
Installing pip2 script to /usr/local/bin

Using /Library/Python/2.7/site-packages/pip-18.1-py2.7.egg
Processing dependencies for pip
Finished processing dependencies for pip

和：

brew unlink python && brew link python

更多信息：

File "/usr/local/lib/python3.7/site-packages/scrapy/pipelines/images.py", line 15, in <module>
    from PIL import Image
ModuleNotFoundError: No module named 'PIL'

MBP:bid user$ type python
python is hashed (/usr/local/opt/python/libexec/bin/python)

MBP:bid user$ /usr/local/opt/python/libexec/bin/pip show pip
Name: pip
Version: 18.1
Summary: The PyPA recommended tool for installing Python packages.
Home-page: https://pip.pypa.io/
Author: The pip developers
Author-email: pypa-dev@groups.google.com
License: MIT
Location: /usr/local/lib/python3.7/site-packages
Requires: 
Required-by: 

任何想法如何解決？

Answer 1

您要使用哪個版本的Python？ 您似乎聲稱您是通過自制軟件安裝的Python，但是您使用的是Apple在/usr/bin/python提供的Python 2.7，這就是為什么pip安裝在/Library/Python/2.7 。

如果要使用自制 Python和pip ，則需要運行/usr/local/opt/python/libexec/bin/python 。 如果運行，則可以查看所有這些信息：

brew info python

通常，在/anywhere/LOCAL/anywhere中查找或安裝的所有內容都是homebrew 。 任何使用/usr/bin或/Library/anywhere都將由Apple提供。

---

如果您想知道正在運行的實際命令，請使用如下type ：

type python
python is hashed (/usr/local/opt/python/libexec/bin/python)

所以這告訴我，在我的機器上， python是/usr/local/...的一個，它必須來自自制軟件，因為它包含/.../LOCAL/...

您的python當前是/usr/bin/python 。 如果你想使用一個自制軟件 ，你需要在你登錄的個人資料更改PATH，把/usr/local/opt/python/libexec/bin 之前 /usr/bin 。 例如：

export PATH=/usr/local/opt/python/libexec/bin:$PATH

然后啟動一個新的終端，以便您使用新的配置文件運行。

---

注意區別：

# Run the old Apple-supplied Python
/usr/bin/python -V
Python 2.7.10

# Run the shiny new homebrew Python
/usr/local/opt/python/libexec/bin/python -V
Python 3.7.1

# Run the homebrew pip - that installs into /something/LOCAL/something - sure sign it is not Apple's
/usr/local/opt/python/libexec/bin/pip show pip
Name: pip
Version: 18.1
Summary: The PyPA recommended tool for installing Python packages.
Home-page: https://pip.pypa.io/
Author: The pip developers
Author-email: pypa-dev@groups.google.com
License: MIT
Location: /usr/local/lib/python3.7/site-packages