new_contents: from FEMur import *
  import sympy as sy
  import numpy as np
  import scipy as sc
  import matplotlib.pyplot as plt
  import matplotlib.tri as tri
  import scipy.interpolate
  from math import ceil
  
  
  class Solver(object):
      '''
      2-dimensional solver top class.
  
      Provides common initialization  to all child solver classes.
      '''
      def __init__(self):
          pass
  
  
  class SteadyHeatSolver(Solver):
      '''
      2-dimensional steady state heat transfer solver.
      '''
      def __init__(self):
          Solver.__init__()
          pass
  
  
  class SteadyStructureSolver(Solver):
      '''
      2-dimensional steady state structure solver.
      '''
      def __init__(self):
          Solver.__init__()
          pass
  
subject: Add skeleton of all 2D solver classes