我正在尝试在 pyzo2014a 上安装 PIL，但它给出了一个错误：
TypeError：
__call__()缺少 1 个必需的位置参数：'name'"
这是完整的报告：
C:\pyzo2014a\lib\site-packages\pip\__main__.py run on 01/25/17 21:50:00
Downloading/unpacking pillow
Getting page https://pypi.python.org/simple/pillow/
URLs to search for versions for pillow:
* https://pypi.python.org/simple/pillow/
Analyzing links from page https://pypi.python.org/simple/pillow/
Skipping link https://pypi.python.org/packages/00/15/e776f42afb6d79f27710aded08fd50998174f772621f1cda5d44701be1ed/Pillow-2.1.0-py2.6-win32.egg#md5=0a85404ffb50fff762615a47e6d363e9 (from https://pypi.python.org/simple/pillow/); unknown archive format: .egg
Ignoring link https://pypi.python.org/packages/7b/11/1d49e73f946234604325f1aafdc2781d02963ea83d cdceda595a62d978f0/Pillow-3.1.0.rc1.zip#md5=df5113cb2e0bc130f3aeb5c543829f18 (from https://pypi.python.org/simple/pillow/), version 3.1.0.rc1 is a pre-release (use --pre to allow).
Ignoring link https://pypi.python.org/packages/91/a8/8ea7bbf6e950531509063b08b30595940f8aef4969 becfdb2b81f2941b2d/Pillow-3.1.0- rc1.tar.gz#md5=e37ac34db7259c95b513939595ad1e7c (from https://pypi.python.org/simple/pillow/), version 3.1.0-rc1 is a pre-release (use --pre to allow).
Ignoring link https://pypi.python.org/packages/99/c7/2b01d25cf2e66edd5fbcbf372dae68a9a079a17a14c6b6fadc5df69a930f/Pillow-3.1.0rc1-cp34-none-win_amd64.whl#md5=ff9da8cb052ff99bbf3b50a15d3cc7b4 (from https://pypi.python.org/simple/pillow/), version 3.1.0rc1 is a pre-release (use --pre to allow).
Using version 4.0.0 (newest of versions: 4.0.0, 3.4.2, 3.4.2, 3.4.1, 3.4.1, 3.4.0, 3.4.0, 3.3.3, 3.3.3, 3.3.2, 3.3.2, 3.3.1, 3.3.1, 3.3.0, 3.3.0, 3.2.0, 3.2.0, 3.2.0, 3.1.2, 3.1.2, 3.1.1, 3.1.1, 3.1.1, 3.1.0, 3.1.0, 3.1.0, 3.0.0, 3.0.0, 3.0.0, 2.9.0, 2.9.0, 2.9.0, 2.8.2, 2.8.2, 2.8.2, 2.8.1, 2.8.1, 2.8.1, 2.8.0, 2.8.0, 2.8.0, 2.7.0, 2.7.0, 2.7.0, 2.6.2, 2.6.2, 2.6.2, 2.6.1, 2.6.1, 2.6.1, 2.6.0, 2.6.0, 2.6.0, 2.5.3, 2.5.3, 2.5.2, 2.5.2, 2.5.1, 2.5.1, 2.5.0, 2.5.0, 2.4.0, 2.4.0, 2.3.2, 2.3.1, 2.3.0, 2.3.0, 2.2.2, 2.2.2, 2.2.1, 2.2.0, 2.1.0, 2.0.0, 1.7.8, 1.7.7, 1.7.6, 1.7.6, 1.7.5, 1.7.4, 1.7.3, 1.7.2, 1.7.1, 1.7.0, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0)
Downloading from URL https://pypi.python.org/packages/8d/80/eca7a2d1a3c2dafb960f32f844d570de988e609f5fd17de92e1cf6a01b0a/Pillow-4.0.0.tar.gz#md5=d5af224b0fa2c66dacc9814785fef9e7 (from https://pypi.python.org/simple/pillow/)
Cleaning up...
Removing temporary dir C:\Users\Acer\AppData\Local\Temp\pip_build_Acer...
Exception:
Traceback (most recent call last):
File "C:\pyzo2014a\lib\site-packages\pip\basecommand.py", line 122, in main
status = self.run(options, args)
File "C:\pyzo2014a\lib\site-packages\pip\commands\install.py", line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "C:\pyzo2014a\lib\site-packages\pip\req.py", line 1229, in prepare_files
req_to_install.run_egg_info()
File "C:\pyzo2014a\lib\site-packages\pip\req.py", line 292, in run_egg_info
logger.notify('Running setup.py (path:%s) egg_info for package %s' % (self.setup_py, self.name))
File "C:\pyzo2014a\lib\site-packages\pip\req.py", line 265, in setup_py
import setuptools
File "C:\pyzo2014a\lib\site-packages\setuptools\__init__.py", line 12, in <module>
import setuptools.version
File "C:\pyzo2014a\lib\site-packages\setuptools\version.py", line 1, in <module>
import pkg_resources
File "C:\pyzo2014a\lib\site-packages\pkg_resources\__init__.py", line 72, in <module>
import packaging.requirements
File "C:\pyzo2014a\lib\site-packages\packaging\requirements.py", line 59, in <module>
MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
TypeError: __call__() missing 1 required positional argument: 'name'
这是什么意思？