class_docstr: Represents an entry in database/trials collection.
  
  Attributes
  ----------
  experiment: str
     Unique identifier for the experiment that produced this trial.
     Same as an `Experiment._id`.
  id_override: str
      Trial id returned by the database. It should be unique for a given
      set of parameters
  heartbeat: datetime.datetime
      Last time trial was identified as being alive.
  status: str
     Indicates how this trial is currently being used. Can take the following
     values:
  
     * 'new' : Denotes a fresh set of parameters suggested by an algorithm,
        not yet tried out.
     * 'reserved' : Indicates that this trial is currently being evaluated by
        a worker process, it was a 'new' trial that got selected.
     * 'suspended' : Means that an algorithm decided to stop the evaluation of
        a 'reserved' trial prematurely.
     * 'completed' : is the status of a previously 'reserved' trial that
        successfully got evaluated. `Trial.results` must contain the evaluation.
     * 'interrupted' : Indicates trials that are stopped from being evaluated
        by external *actors* (e.g. cluster timeout, KeyboardInterrupt, killing
        of the worker process).
     * 'broken' : Indicates a trial that was not successfully evaluated for not
        expected reason.
  worker: str
     Corresponds to worker's unique id that handled this trial.
  submit_time: `datetime.datetime`
     When was this trial suggested?
  start_time: `datetime.datetime`
     When was this trial first reserved?
  end_time: `datetime.datetime`
     When was this trial evaluated successfully?
  results: list of `Trial.Result`
     List of evaluated metrics for this particular set of params. One and only
     one of them is necessarily an *objective* function value. The other are
     *constraints*, the value of an expression desired to be larger/equal to 0.
  params: dict of params
     Dict of suggested values for the `Experiment` parameter space.
     Consists a sample to be evaluated.
class_docstr_tok: ["Represents","an","entry","in","database\/trials","collection",".","Attributes","--","--","--","--","--","experiment",":","str","Unique","identifier","for","the","experiment","that","produced","this","trial",".","Same","as","an","`","Experiment._id","`",".","id_override",":","str","Trial","id","returned","by","the","database",".","It","should","be","unique","for","a","given","set","of","parameters","heartbeat",":","datetime.datetime","Last","time","trial","was","identified","as","being","alive",".","status",":","str","Indicates","how","this","trial","is","currently","being","used",".","Can","take","the","following","values",":","*","'new","'",":","Denotes","a","fresh","set","of","parameters","suggested","by","an","algorithm",",","not","yet","tried","out",".","*","'reserved","'",":","Indicates","that","this","trial","is","currently","being","evaluated","by","a","worker","process",",","it","was","a","'new","'","trial","that","got","selected",".","*","'suspended","'",":","Means","that","an","algorithm","decided","to","stop","the","evaluation","of","a","'reserved","'","trial","prematurely",".","*","'completed","'",":","is","the","status","of","a","previously","'reserved","'","trial","that","successfully","got","evaluated",".","`","Trial.results","`","must","contain","the","evaluation",".","*","'interrupted","'",":","Indicates","trials","that","are","stopped","from","being","evaluated","by","external","*","actors","*","(","e.g",".","cluster","timeout",",","KeyboardInterrupt",",","killing","of","the","worker","process",")",".","*","'broken","'",":","Indicates","a","trial","that","was","not","successfully","evaluated","for","not","expected","reason",".","worker",":","str","Corresponds","to","worker","'s","unique","id","that","handled","this","trial",".","submit_time",":","`","datetime.datetime","`","When","was","this","trial","suggested","?","start_time",":","`","datetime.datetime","`","When","was","this","trial","first","reserved","?","end_time",":","`","datetime.datetime","`","When","was","this","trial","evaluated","successfully","?","results",":","list","of","`","Trial.Result","`","List","of","evaluated","metrics","for","this","particular","set","of","params",".","One","and","only","one","of","them","is","necessarily","an","*","objective","*","function","value",".","The","other","are","*","constraints","*",",","the","value","of","an","expression","desired","to","be","larger\/equal","to","0.","params",":","dict","of","params","Dict","of","suggested","values","for","the","`","Experiment","`","parameter","space",".","Consists","a","sample","to","be","evaluated","."]
docstr: Represent with a string the given values.
code: def format_values(values, sep=","):
      """Represent with a string the given values."""
      return sep.join(
          map(lambda value: "{0.name}:{0.value}".format(value), values)
      )
  
imports: from __future__ import annotations
  import copy
  import hashlib
  import logging
  import os
  import warnings
  from datetime import timedelta
  from orion.core.utils.exceptions import InvalidResult
  from orion.core.utils.flatten import unflatten
label_desc: Use image node_id 31 for calling the Trial obj's underlying member method code with example usage: obj.format_values(values, sep) and returns: sep