我正在使用PyInstaller将wxpython（3.0.2.0）应用程序转换为二进制文件。在Ubuntu
12.04上构建和执行二进制文件时，它们工作正常。但是，如果我在Ubuntu
14.04上构建，则会收到以下错误。（当我直接启动python脚本即python my_application.py时，即使在Ubuntu
14.04中，该应用程序也可以工作）。知道使用PyInstaller打包应用程序时可能缺少什么吗？

$ ./my_application 
Traceback (most recent call last):
  File "<string>", line 22, in <module>
  File "/usr/local/lib/python2.7/dist-packages/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "/local/workspace/my_application/out00-PYZ.pyz/wx", line 45, in <module>
  File "/usr/local/lib/python2.7/dist-packages/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "/local/workspace/my_application/out00-PYZ.pyz/wx._core", line 4, in <module>
**ImportError: No module named _core_**

我的PyInstaller规格文件如下所示：

...
pyz = PYZ(a.pure)
exe = EXE(pyz,
          a.scripts,
          exclude_binaries=True,
          name='my_application',
          debug=False,
          onefile = True,
          strip=None,
          upx=True,
          console=True )
coll = COLLECT(exe,
               a.binaries,
               a.zipfiles,
               a.datas,
               strip=None,
               upx=True,
               name='my_application')