class_docstr: The formatter for UnitDbl data types.  This allows for formatting
  with the unit string.
docstr: Return the value formatted into a string.
code: def format_data(self, value):
      "Return the value formatted into a string."
      return "{:.12}".format(value)
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/testing/jpl_units/UnitDblFormatter.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import matplotlib.ticker
label_desc: Use image node_id 4 for calling the UnitDblFormatter obj's underlying member method code with example usage: obj.format_data(value) and returns: str