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 logging import getLogger
  from sys import version_info
  
  if version_info.minor < 7:
      getLogger(__name__).warning(  # pylint: disable=logging-not-lazy
          "You are using Python 3.%s. This version does not support timestamps "
          "with nanosecond precision and the OpenTelemetry SDK will use "
          "millisecond precision instead. Please refer to PEP 546 for more "
          "information. Please upgrade to Python 3.7 or newer to use nanosecond "
          "precision." % version_info.minor
      )
      from time import time
  
      def _time_ns() -> int:
          return int(time() * 1e9)
  
  
  else:
      from time import time_ns
  
      _time_ns = time_ns
  
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 logging import getLogger
  from sys import version_info
  
  if version_info.minor < 7:
      getLogger(__name__).warning(  # pylint: disable=logging-not-lazy
          "You are using Python 3.%s. This version does not support timestamps "
          "with nanosecond precision and the OpenTelemetry SDK will use "
          "millisecond precision instead. Please refer to PEP 564 for more "
          "information. Please upgrade to Python 3.7 or newer to use nanosecond "
          "precision." % version_info.minor
      )
      from time import time
  
      def _time_ns() -> int:
          return int(time() * 1e9)
  
  
  else:
      from time import time_ns
  
      _time_ns = time_ns
  
subject: Correct SDK PEP 564 nanosecond time reference (#1867)