问python rpy2.ipython不工作-找不到模块(操作系统：%load_ext mint 17 |R 3.1.2 |python 2.7.6 | ipython notebook 2.3.1 | rpy2 2.5.2)

EN

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 ImportError                               Traceback (most recent call last)
 <ipython-input-18-691c6d73b073> in <module>()
 ----> 1 get_ipython().magic(u'load_ext rpy2.ipython')
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/interactiveshell.pyc in magic(self, arg_s)
    2203         magic_name, _, magic_arg_s = arg_s.partition(' ')
    2204         magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
 -> 2205         return self.run_line_magic(magic_name, magic_arg_s)
    2206 
    2207     #-------------------------------------------------------------------------
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/interactiveshell.pyc in run_line_magic(self, magic_name, line)
    2124                 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
    2125             with self.builtin_trap:
 -> 2126                 result = fn(*args,**kwargs)
    2127             return result
    2128 
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/magics/extension.pyc in load_ext(self, module_str)
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/magic.pyc in <lambda>(f, *a, **k)
     191     # but it's overkill for just that one bit of state.
     192     def magic_deco(arg):
 --> 193         call = lambda f, *a, **k: f(*a, **k)
     194 
     195         if callable(arg):
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/magics/extension.pyc in load_ext(self, module_str)
      61         if not module_str:
      62             raise UsageError('Missing module name.')
 ---> 63         res = self.shell.extension_manager.load_extension(module_str)
      64 
      65         if res == 'already loaded':
 
 /usr/local/lib/python2.7/dist-packages/IPython/core/extensions.pyc in load_extension(self, module_str)
      96             if module_str not in sys.modules:
      97                 with prepended_to_syspath(self.ipython_extension_dir):
 ---> 98                     __import__(module_str)
      99             mod = sys.modules[module_str]
     100             if self._call_load_ipython_extension(mod):
 
 ImportError: No module named ipython