code: def __init__(self, name, fullname=None):
      self.name = name
      if fullname is None:
          fullname = name
      self.fullname = fullname
      self.conversions = dict()
  
imports: import math
  from packaging.version import parse
  import numpy
  import matplotlib.ticker
  import matplotlib.units
label_desc: Use image node_id 1 to create a new BasicUnit object  with example: obj = BasicUnit(name, fullname)