class_docstr: Scalars Plugin for TensorBoard.
docstr: Given a tag and list of runs, return dict of ScalarEvent arrays.
docstr_tok: ["Given","a","tag","and","list","of","runs",",","return","dict","of","ScalarEvent","arrays","."]
code: def scalars_multirun_route(self, request):
      """Given a tag and list of runs, return dict of ScalarEvent arrays."""
      if request.method != "POST":
          raise werkzeug.exceptions.MethodNotAllowed(["POST"])
      tags = request.form.getlist("tag")
      runs = request.form.getlist("runs")
      if len(tags) != 1:
          raise errors.InvalidArgumentError(
              "tag must be specified exactly once"
          )
      tag = tags[0]
  
      ctx = plugin_util.context(request.environ)
      experiment = plugin_util.experiment_id(request.environ)
      (body, mime_type) = self.scalars_multirun_impl(
          ctx, tag, runs, experiment
      )
      return http_util.Respond(request, body, mime_type)
  
imports: import csv
  import io
  import werkzeug.exceptions
  from werkzeug import wrappers
  from tensorboard import errors
  from tensorboard import plugin_util
  from tensorboard.backend import http_util
  from tensorboard.data import provider
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.scalar import metadata
label_desc: Use image node_id 10 for calling the ScalarsPlugin obj's underlying member method code with example usage: obj.scalars_multirun_route(request) and returns: http_util