Fail to import wx.lib.plot

[tritemio]

In up-to-date anaconda python 2.7 environment under Windows x64, I get an error when importing wx.lib.plot. The error says numpy is not found, but as you can see below it is installed:

Python 2.7.10 |Continuum Analytics, Inc.| (default, Dec  1 2015, 11:29:38) [MSC v.1500 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.

IPython 4.0.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: import numpy; numpy.__version__
Out[1]: '1.10.1'

In [2]: import wx

In [3]: import wx.lib.plot as plot
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-3-865c1dd4bc1f> in <module>()
----> 1 import wx.lib.plot as plot

C:\Users\laser2002j\Miniconda3\envs\py27\lib\site-packages\wx-3.0-msw\wx\lib\plot.py in <module>()
    124     (http://numpy.scipy.org) for information on downloading source or
    125     binaries."""
--> 126     raise ImportError, "NumPy not found.\n" + msg
    127
    128

ImportError: NumPy not found.

    This module requires the NumPy module, which could not be
    imported.  It probably is not installed (it's not part of the
    standard Python distribution). See the Numeric Python site
    (http://numpy.scipy.org) for information on downloading source or
    binaries.

In [4]:

[tritemio]

The error happens because wxpython uses numpy.oldnumeric which has been removed in numpy 1.9:

# Needs NumPy
try:
    import numpy.oldnumeric as _Numeric
except:
    msg= """
    This module requires the NumPy module, which could not be
    imported.  It probably is not installed (it's not part of the
    standard Python distribution). See the Numeric Python site
    (http://numpy.scipy.org) for information on downloading source or
    binaries."""
    raise ImportError, "NumPy not found.\n" + msg

Installing numpy 1.8 fixes the error.

[tritemio]

This is a known issue in earlier versions of wxpython:

http://trac.wxwidgets.org/ticket/16590

Anaconda ships wxpython 3.0.0. The latest version 3.0.2 (released on October 2014) has a fix for this problem. The package in Anaconda needs to be updated or otherwise should depend on numpy=1.8.