upstream/ipython Files · IPython/html/services/nbconvert/handlers.py

use promises to wait for kernelspecs on notebook load...

use promises to wait for kernelspecs on notebook load should avoid race condition that causes attempt to load kernelspec prior to loading the kernelspec list

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             handlers.py
        
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             / IPython / html / services / nbconvert / handlers.py
          
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      import json

      from tornado import web

      from ...base.handlers import IPythonHandler, json_errors

      class NbconvertRootHandler(IPythonHandler):

          SUPPORTED_METHODS = ('GET',)

          @web.authenticated

          @json_errors

          def get(self):

              try:

                  from IPython.nbconvert.exporters.export import exporter_map

              except ImportError as e:

                  raise web.HTTPError(500, "Could not import nbconvert: %s" % e)

              res = {}

              for format, exporter in exporter_map.items():

                  res[format] = info = {}

                  info['output_mimetype'] = exporter.output_mimetype

              self.finish(json.dumps(res))

      default_handlers = [

          (r"/api/nbconvert", NbconvertRootHandler),

      ]

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				import json

				from tornado import web

				from ...base.handlers import IPythonHandler, json_errors

				class NbconvertRootHandler(IPythonHandler):
				SUPPORTED_METHODS = ('GET',)

				@web.authenticated
				@json_errors
				def get(self):
				try:
				from IPython.nbconvert.exporters.export import exporter_map
				except ImportError as e:
				raise web.HTTPError(500, "Could not import nbconvert: %s" % e)
				res = {}
				for format, exporter in exporter_map.items():
				res[format] = info = {}
				info['output_mimetype'] = exporter.output_mimetype

				self.finish(json.dumps(res))

				default_handlers = [
				(r"/api/nbconvert", NbconvertRootHandler),
				]