text: import io, os, sys, types
  
  import nbformat
  from IPython.core.interactiveshell import InteractiveShell
  
  # This tool allows importing .ipynb files in other ipthon notebooks.
  # Simply type 'import thing' and it will look for thing.ipynb and 
  # import it.
  
  def find_notebook(fullname, path=None):
      """find a notebook, given its fully qualified name and an optional path
      
      This turns "foo.bar" into "foo/bar.ipynb"
      and tries turning "Foo_Bar" into "Foo Bar" if Foo_Bar
      does not exist.
      """
      name = fullname.rsplit('.', 1)[-1]
      if not path:
          path = ['']
      for d in path:
          nb_path = os.path.join(d, name + ".ipynb")
          if os.path.isfile(nb_path):
              return nb_path
          # let import Notebook_Name find "Notebook Name.ipynb"
          nb_path = nb_path.replace("_", " ")
          if os.path.isfile(nb_path):
              return nb_path
  			
  class NotebookLoader(object):
      """Module Loader for IPython Notebooks"""
      def __init__(self, path=None):
          self.shell = InteractiveShell.instance()
          self.path = path
      
      def load_module(self, fullname):
          """import a notebook as a module"""
          path = find_notebook(fullname, self.path)
          
          print ("importing IPython notebook from %s" % path)
                                         
          # load the notebook object
          with io.open(path, 'r', encoding='utf-8') as f:
              nb = nbformat.read(f, nbformat.NO_CONVERT)
          
          
          # create the module and add it to sys.modules
          # if name in sys.modules:
          #    return sys.modules[name]
          mod = types.ModuleType(fullname)
          mod.__file__ = path
          mod.__loader__ = self
          sys.modules[fullname] = mod
          
          # extra work to ensure that magics that would affect the user_ns
          # actually affect the notebook module's ns
          save_user_ns = self.shell.user_ns
          self.shell.user_ns = mod.__dict__
          
          try:
              for cell in nb.dict()["cells"]:
                  if cell.cell_type == 'code':
                      # transform the input to executable Python
                      code = self.shell.input_transformer_manager.transform_cell(cell.source)
                      # run the code in themodule
                      exec(code, mod.__dict__)
          finally:
              self.shell.user_ns = save_user_ns
          return mod
  		
  class NotebookFinder(object):
      """Module finder that locates IPython Notebooks"""
      def __init__(self):
          self.loaders = {}
      
      def find_module(self, fullname, path=None):
          nb_path = find_notebook(fullname, path)
          if not nb_path:
              return
          
          key = path
          if path:
              # lists aren't hashable
              key = os.path.sep.join(path)
          
          if key not in self.loaders:
              self.loaders[key] = NotebookLoader(path)
          return self.loaders[key]
      
  
  sys.meta_path.append(NotebookFinder())