code: def get_date_from_ms(ms):
      """
      The date from the number of miliseconds from the epoch.
  
      Parameters
      ----------
      ms: int
  
      Returns
      -------
      datetime
  
      """
      return datetime.fromtimestamp(ms / 1000.0)
  
file_path: catalyst/catalyst/exchange/utils/datetime_utils.py
imports: import calendar
  import math
  import re
  from datetime import datetime, timedelta, date
  import pandas
  import pytz
  from catalyst.exchange.exchange_errors import InvalidHistoryFrequencyError, InvalidHistoryFrequencyAlias
label_desc: Use image node_id 1 for calling a global function with example usage: get_date_from_ms(ms) and returns: datetime