old_contents: import os as _os
  import dash as _dash
  import sys as _sys
  from version import __version__
  
  _current_path = _os.path.dirname(_os.path.abspath(__file__))
  
  _components = _dash.development.component_loader.load_components(
      _os.path.join(_current_path, 'metadata.json'),
      'dash_core_components'
  )
  
  _this_module = _sys.modules[__name__]
  
  _js_dist = [
      {
          "relative_package_path": "bundle.js",
          "external_url": (
              "https://unpkg.com/dash-core-components@{}"
              "/dash_core_components/bundle.js"
          ).format(__version__)
      }
  ]
  
  _css_dist = [
      {
          "relative_package_path": [
              "react-select@1.0.0-rc.3.min.css",
              "rc-slider@6.1.2.css"
          ],
          "external_url": [
              "https://unpkg.com/react-select@1.0.0-rc.3/dist/react-select.min.css",
              "https://unpkg.com/rc-slider@6.1.2/assets/index.css"
          ]
      }
  ]
  
  
  for component in _components:
      setattr(_this_module, component.__name__, component)
      setattr(component, '_js_dist', _js_dist)
      setattr(component, '_css_dist', _css_dist)
  
new_contents: import os as _os
  import dash as _dash
  import sys as _sys
  from .version import __version__
  
  _current_path = _os.path.dirname(_os.path.abspath(__file__))
  
  _components = _dash.development.component_loader.load_components(
      _os.path.join(_current_path, 'metadata.json'),
      'dash_core_components'
  )
  
  _this_module = _sys.modules[__name__]
  
  _js_dist = [
      {
          "relative_package_path": "bundle.js",
          "external_url": (
              "https://unpkg.com/dash-core-components@{}"
              "/dash_core_components/bundle.js"
          ).format(__version__)
      }
  ]
  
  _css_dist = [
      {
          "relative_package_path": [
              "react-select@1.0.0-rc.3.min.css",
              "rc-slider@6.1.2.css"
          ],
          "external_url": [
              "https://unpkg.com/react-select@1.0.0-rc.3/dist/react-select.min.css",
              "https://unpkg.com/rc-slider@6.1.2/assets/index.css"
          ]
      }
  ]
  
  
  for component in _components:
      setattr(_this_module, component.__name__, component)
      setattr(component, '_js_dist', _js_dist)
      setattr(component, '_css_dist', _css_dist)
  
subject: Extend import statement to support Python 3