old_contents: # Copyright The OpenTelemetry Authors
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from sys import argv
  
  from flask import Flask
  from requests import get
  
  from opentelemetry import propagators, trace
  from opentelemetry.sdk.trace import TracerProvider
  from opentelemetry.sdk.trace.export import (
      ConsoleSpanExporter,
      SimpleExportSpanProcessor,
  )
  
  app = Flask(__name__)
  
  trace.set_tracer_provider(TracerProvider())
  tracer = trace.get_tracer_provider().get_tracer(__name__)
  
  trace.get_tracer_provider().add_span_processor(
      SimpleExportSpanProcessor(ConsoleSpanExporter())
  )
  
  
  assert len(argv) == 2
  
  with tracer.start_as_current_span("client"):
  
      with tracer.start_as_current_span("client-server"):
          headers = {}
          propagators.inject(dict.__setitem__, headers)
          requested = get(
              "http://localhost:8082/server_request",
              params={"param": argv[1]},
              headers=headers,
          )
  
          assert requested.status_code == 200
  
new_contents: # Copyright The OpenTelemetry Authors
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from sys import argv
  
  from requests import get
  
  from opentelemetry import propagators, trace
  from opentelemetry.sdk.trace import TracerProvider
  from opentelemetry.sdk.trace.export import (
      ConsoleSpanExporter,
      SimpleExportSpanProcessor,
  )
  
  trace.set_tracer_provider(TracerProvider())
  tracer = trace.get_tracer_provider().get_tracer(__name__)
  
  trace.get_tracer_provider().add_span_processor(
      SimpleExportSpanProcessor(ConsoleSpanExporter())
  )
  
  
  assert len(argv) == 2
  
  with tracer.start_as_current_span("client"):
  
      with tracer.start_as_current_span("client-server"):
          headers = {}
          propagators.inject(dict.__setitem__, headers)
          requested = get(
              "http://localhost:8082/server_request",
              params={"param": argv[1]},
              headers=headers,
          )
  
          assert requested.status_code == 200
  
subject: Remove unnecessary Flask app (#570)