class_docstr: Merging dictionaries of features containing dataframes with statistics as its values.
docstr: Initialize an instance of MergeStatistics.
  
  :param list read_keys: list of keys of input data to read from the datastore
  :param str store_key: key of output data to store in the datastore
docstr_tok: ["Initialize","an","instance","of","MergeStatistics",".",":","param","list","read_keys",":","list","of","keys","of","input","data","to","read","from","the","datastore",":","param","str","store_key",":","key","of","output","data","to","store","in","the","datastore"]
code: def __init__(self, read_keys: list[str], store_key: str) -> None:
      """Initialize an instance of MergeStatistics.
  
      :param list read_keys: list of keys of input data to read from the datastore
      :param str store_key: key of output data to store in the datastore
      """
      super().__init__()
      self.read_keys = read_keys
      self.store_key = store_key
  
imports: from __future__ import annotations
  import pandas
  from popmon.base import Module
label_desc: Use image node_id 1 to create a new MergeStatistics object from inherited base classes: Module with example: obj = MergeStatistics(read_keys, store_key)