class_docstr: : A matplotlib converter class.  Provides matplotlib conversion
  functionality for Monte Epoch and Duration classes.
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docstr: : Return the default unit for value, or None.
  
  = INPUT VARIABLES
  - value   The value or list of values that need units.
  
  = RETURN VALUE
  - Returns the default units to use for value.
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code: def default_units(value, axis):
      """: Return the default unit for value, or None.
  
      = INPUT VARIABLES
      - value   The value or list of values that need units.
  
      = RETURN VALUE
      - Returns the default units to use for value.
      """
      frame = None
      if iterable(value) and not isinstance(value, six.string_types):
          return EpochConverter.default_units(value[0], axis)
      else:
          frame = value.frame()
  
      return frame
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/testing/jpl_units/EpochConverter.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import matplotlib.units
  import matplotlib.dates
  from matplotlib.cbook import iterable
label_desc: Use image node_id 6 for calling the EpochConverter obj's underlying member method code with example usage: obj.default_units(value, axis) and returns: frame, EpochConverter