PIP安装不需要'；t工作（六、numpy和python dateutil要求）

我是Python的新手，希望在Mac上为Python 3.5安装枕头包。我使用

pip-install-pillow

命令并得到以下错误：

Jaspers-MBP:~ jasperherrmann$ pip install pillow
Collecting pillow
  Using cached Pillow-5.1.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
prompt-toolkit 1.0.15 has requirement six>=1.9.0, but you'll have six 
1.4.1 which is incompatible.
pandas 0.22.0 has requirement numpy>=1.9.0, but you'll have numpy 1.8.0rc1 which is incompatible.
html5lib 1.0.1 has requirement six>=1.9, but you'll have six 1.4.1 which is incompatible.
matplotlib 1.3.1 has requirement numpy>=1.5, but you'll have numpy 1.8.0rc1 which is incompatible.
jupyter-client 5.2.3 has requirement python-dateutil>=2.1, but you'll have python-dateutil 1.5 which is incompatible.
Installing collected packages: pillow

因此，我继续尝试使用

pip install six

、

pip install numpy

和

pip install python dateutil

安装Panda、html5lib等所需的所有东西，并得到下一个错误（对于所有命令，相同）：

所以我想好了，第六个和其他的都已经存在了，我只需要用

pip安装--upgrade six

命令来升级它们。这是我得到的最后一个错误，现在不知道如何继续：

Jaspers-MBP:~ jasperherrmann$ pip install --upgrade six
Collecting six
  Using cached six-1.11.0-py2.py3-none-any.whl
pandas 0.22.0 has requirement numpy>=1.9.0, but you'll have numpy 1.8.0rc1 which is incompatible.
matplotlib 1.3.1 has requirement numpy>=1.5, but you'll have numpy 1.8.0rc1 which is incompatible.
jupyter-client 5.2.3 has requirement python-dateutil>=2.1, but you'll have python-dateutil 1.5 which is incompatible.
Installing collected packages: six
  Found existing installation: six 1.4.1
Cannot uninstall 'six'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
Jaspers-MBP:~ jasperherrmann$ 

---

因此，我被困在这里，如果你们中的一些人能解决我的问题，我会很高兴：-）

只要做

pip安装——忽略已安装的枕头

，就能解决你的问题。

对于macOS，只要尝试

pip安装——升级——user six

。祝你好运

你确定这个软件包还能用吗？你确认过低版本的6不会弄坏枕头吗？

Jaspers-MBP:~ jasperherrmann$ pip install --upgrade six
Collecting six
  Using cached six-1.11.0-py2.py3-none-any.whl
pandas 0.22.0 has requirement numpy>=1.9.0, but you'll have numpy 1.8.0rc1 which is incompatible.
matplotlib 1.3.1 has requirement numpy>=1.5, but you'll have numpy 1.8.0rc1 which is incompatible.
jupyter-client 5.2.3 has requirement python-dateutil>=2.1, but you'll have python-dateutil 1.5 which is incompatible.
Installing collected packages: six
  Found existing installation: six 1.4.1
Cannot uninstall 'six'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
Jaspers-MBP:~ jasperherrmann$