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

根据Scipy网站的说法,在Ubuntu 11.10中,numpy和scipy预先打包,所以我做的是：

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

然后我试着在Python中调用numpy但是得到一个错误：

ImportError: cannot import name datetime_data.

任何想法为什么会这样？附加完整的错误消息.

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",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

看起来你在/usr/local/lib/python2.7/dist-packages中有一个破坏的numpy安装,包管理器将numpy安装到/usr/lib/pyshared/python2.7

你应该删除破碎的numpy

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

那么你用apt-get安装的numpy应该按预期工作.