python - 如何在 Ubuntu 11.10 Oneiric 中正确安装 python-numpy

Question

根据 Scipy 网站，在 Ubuntu 11.10 中，numpy 和 scipy 是预先打包的，所以我所做的是:

apt-get install python2.7
apt-get install python-numpy
apt-get install python-scipy

然后我尝试在 Python 中调用 numpy 但出现错误:

ImportError: cannot import name datetime_data.

知道为什么会这样吗？附上完整的错误信息。

---

Python 2.7.2+ (default, Oct  4 2011, 20:03:08)
[GCC 4.6.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/usr/local/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 4, in <module>
    from type_check import *
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/usr/local/lib/python2.7/dist-packages/numpy/core/__init__.py", line 8, in <module>
    import numerictypes as nt
  File "/usr/local/lib/python2.7/dist-packages/numpy/core/numerictypes.py", line 92, in <module>
    from numpy.core.multiarray import typeinfo, ndarray, array, \
ImportError: cannot import name datetime_data

Answer 1

看起来你在/usr/local/lib/python2.7/dist-packages 中安装了一个损坏的 numpy，包管理器将 numpy 安装到/usr/lib/pyshared/python2.7

你应该删除损坏的 numpy

$ sudo rm -rf /usr/local/lib/python2.7/dist-packages/numpy

那么您使用 apt-get 安装的 numpy 应该可以正常工作。