code: def _build_row(padded_cells, colwidths, colaligns, rowfmt):
      "Return a string which represents a row of data cells."
      if not rowfmt:
          return None
      if hasattr(rowfmt, "__call__"):
          return rowfmt(padded_cells, colwidths, colaligns)
      else:
          return _build_simple_row(padded_cells, rowfmt)
  
imports: from __future__ import print_function
  from __future__ import unicode_literals
  from collections import namedtuple
  from platform import python_version_tuple
  import re
label_desc: Use image node_id 24 for calling a global function with example usage: _build_row(padded_cells, colwidths, colaligns, rowfmt) and returns: None, rowfmt, _build_simple_row