old_contents: def get_callable(path):
      """Return a callable from a given dotted path."""
      try:
         module_path, callable_name = path.rsplit('.', 1)
      except ValueError:
         raise ImportError("%s doesn't look like a callable path" % path)
  
      module = __import__(module_path, fromlist=[''])
  
      try:
          return getattr(module, callable_name)
      except AttributeError:
          raise ImportError("Could not import %s from module %s" %
                            (callable_name, module_path))
  
new_contents: def get_callable(path):
      """Return a callable from a given dotted path."""
      try:
          module_path, callable_name = path.rsplit('.', 1)
      except ValueError:
          raise ImportError("%s doesn't look like a callable path" % path)
  
      module = __import__(module_path, fromlist=[''])
  
      try:
          return getattr(module, callable_name)
      except AttributeError:
          raise ImportError("Could not import %s from module %s" %
                            (callable_name, module_path))
  
subject: Fix indentation