old_contents: #!/usr/bin/python
  # -*- coding: utf-8 -*-
  
  """
  Python-nvd3 is a Python wrapper for NVD3 graph library.
  NVD3 is an attempt to build re-usable charts and chart components
  for d3.js without taking away the power that d3.js gives you.
  
  Project location : https://github.com/areski/python-nvd3
  """
  
  __version__ = '0.10.2'  # edit also docs/source/conf.py
  
  
  from .lineChart import lineChart
  from .pieChart import pieChart
  from .lineWithFocusChart import lineWithFocusChart
  from .stackedAreaChart import stackedAreaChart
  from .multiBarHorizontalChart import multiBarHorizontalChart
  from .linePlusBarChart import linePlusBarChart
  from .cumulativeLineChart import cumulativeLineChart
  from .scatterChart import scatterChart
  from .discreteBarChart import discreteBarChart
  from .multiBarChart import multiBarChart
  from .linePlusBarWithFocusChart import linePlusBarWithFocusChart
  
  
  class lineChart(lineChart):
      pass
  
  
  class pieChart(pieChart):
      pass
  
  
  class lineWithFocusChart(lineWithFocusChart):
      pass
  
  
  class linePlusBarWithFocusChart(linePlusBarWithFocusChart):
      pass
  
  
  class stackedAreaChart(stackedAreaChart):
      pass
  
  
  class multiBarHorizontalChart(multiBarHorizontalChart):
      pass
  
  
  class linePlusBarChart(linePlusBarChart):
      pass
  
  
  class cumulativeLineChart(cumulativeLineChart):
      pass
  
  
  class scatterChart(scatterChart):
      pass
  
  
  class discreteBarChart(discreteBarChart):
      pass
  
  
  class multiBarChart(multiBarChart):
      pass
  
new_contents: #!/usr/bin/python
  # -*- coding: utf-8 -*-
  
  """
  Python-nvd3 is a Python wrapper for NVD3 graph library.
  NVD3 is an attempt to build re-usable charts and chart components
  for d3.js without taking away the power that d3.js gives you.
  
  Project location : https://github.com/areski/python-nvd3
  """
  
  __version__ = '0.10.2'  # edit also docs/source/conf.py
  __all__ = ['lineChart', 'pieChart', 'lineWithFocusChart',
             'StackedAreaChart', 'multiBarHorizontalChart',
             'linePlusBarChart', 'cumulativeLineChart',
             'scatterChart', 'discreteBarChart', 'multiBarChart',
             'linePlusBarWithFocusChart']
  
  
  from .lineChart import lineChart
  from .pieChart import pieChart
  from .lineWithFocusChart import lineWithFocusChart
  from .stackedAreaChart import stackedAreaChart
  from .multiBarHorizontalChart import multiBarHorizontalChart
  from .linePlusBarChart import linePlusBarChart
  from .cumulativeLineChart import cumulativeLineChart
  from .scatterChart import scatterChart
  from .discreteBarChart import discreteBarChart
  from .multiBarChart import multiBarChart
  from .linePlusBarWithFocusChart import linePlusBarWithFocusChart
  
subject: Remove unnecessary class inherits