docstr: Convert ``number_format_dict`` to an openpyxl v2.1.0 number format
  initializer.
  
  Parameters
  ----------
  number_format_dict : dict
      A dict with zero or more of the following keys.
          'format_code' : str
  
  Returns
  -------
  number_format : str
docstr_tok: ["Convert","``","number_format_dict","``","to","an","openpyxl","v2.1.0","number","format","initializer",".","Parameters","--","--","--","--","--","number_format_dict",":","dict","A","dict","with","zero","or","more","of","the","following","keys",".","'format_code","'",":","str","Returns","--","--","--","-","number_format",":","str"]
code: def _convert_to_number_format(cls, number_format_dict):
      """
      Convert ``number_format_dict`` to an openpyxl v2.1.0 number format
      initializer.
  
      Parameters
      ----------
      number_format_dict : dict
          A dict with zero or more of the following keys.
              'format_code' : str
  
      Returns
      -------
      number_format : str
      """
      return number_format_dict["format_code"]
  
imports: from __future__ import annotations
  import mmap
  from typing import TYPE_CHECKING, Any, cast
  import numpy
  from pandas.compat._optional import import_optional_dependency
  from pandas.util._decorators import doc
  from pandas.core.shared_docs import _shared_docs
  from pandas.io.excel._base import BaseExcelReader, ExcelWriter
  from pandas.io.excel._util import combine_kwargs, validate_freeze_panes
label_desc: Use image node_id 13 for calling the OpenpyxlWriter obj's underlying member method code with example usage: obj._convert_to_number_format(cls, number_format_dict) and returns: number_format_dict