class_docstr: A sorted dictionary of :class:`Meters`.
  
  Meters are sorted according to a priority that is given when the
  meter is first added to the dictionary.
class_docstr_tok: ["A","sorted","dictionary","of",":","class",":","`","Meters","`",".","Meters","are","sorted","according","to","a","priority","that","is","given","when","the","meter","is","first","added","to","the","dictionary","."]
docstr: Get a single smoothed value.
docstr_tok: ["Get","a","single","smoothed","value","."]
code: def get_smoothed_value(self, key: str) -> float:
      """Get a single smoothed value."""
      meter = self[key]
      if isinstance(meter, MetersDict._DerivedMeter):
          return meter.fn(self)
      else:
          return meter.smoothed_value
  
imports: import bisect
  import time
  from collections import OrderedDict
  from typing import Dict, Optional
label_desc: Use image node_id 6 for calling the MetersDict obj's underlying member method code with example usage: obj.get_smoothed_value(key) and returns: meter, meter