wxPython assertion erorr and output truncated

I installed wxPython 3.0.2.0 with ./build-wxpython.py and tested it with a simple “hello world”. I got the follow error when calling wx.Frame

  $ python
Python 2.7.10 (default, May 28 2015, 17:39:01) [GCC Intel(R) C++ gcc 4.8 mode] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import wx
>>> app = wx.App()
>>> frame = wx.Frame(None, title="Hello World")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/scratch/wxPython/wxPython/wx/_windows.py", line 580, in __init__
_windows_.Frame_swiginit(self,_windows_.new_Frame(*args, **kwargs))
wx._core.PyAssertionError: C++ assertion "Assert failure" failed at /scratch/wxPython/src/common/strc

The error message is truncated so I don’t know what exactly it is. What could be wrong? Thanks

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