安装Pillow for Python的问题

Question

我正在尝试通过pip在我的RedHat操作系统中安装枕头。

sudo pip install Pillow

但是，我收到以下错误

You are using pip version 7.1.0, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting Pillow
/usr/lib/python2.6/sitepackages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Downloading Pillow-4.2.1.tar.gz (12.7MB)
    100% |\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588| 12.7MB 35kB/s 
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
  File "<string>", line 20, in <module>
  File "/tmp/pip-build-5XOfq_/Pillow/setup.py", line 143
    required = {'jpeg', 'zlib'}
                      ^
SyntaxError: invalid syntax

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-5XOfq_/Pillow

我如何解决这个问题？

谢谢

Answer 1

您得到的错误与Python2.7中引入的创建集合的新语法有关。

{item1, item2, ...}

您运行的Python版本似乎早于2.7，该版本不能识别这是有效的语法。

Pillow的网站包括notes on which versions of Pillow are compatible with which versions of Python。您需要升级Python (推荐)，或者选择与您已有的Python版本兼容的旧版本的Pillow。

Answer 2

http://prodiguer.github.io/synda/faq.html#transfer-module

这里是这样说的：

此错误会影响从源代码安装的3.6版本(RPM3.6和DEB3.6不应受影响)。该问题已在3.7中修复。它可以通过降级pypi枕头包在3.6中修复：

pip install pillow==3.4.2