old_contents: """
  Filename: main.py
  
  See README.md
  
  Developed under the Apache License 2.0
  """
  #______________________________________________________________________________
  #Header Imports
  
  
  
  
  
  
  #______________________________________________________________________________
  #Start main.py
  
  
  
  
  
new_contents: """
  Filename: main.py
  
  See README.md
  
  Developed under the Apache License 2.0
  """
  #______________________________________________________________________________
  #Header Imports
  import array
  import contextlib
  import wave
  import matplotlib.pyplot as plt
  import numpy as np
  import math 
  
  #______________________________________________________________________________
  #Start main.py
  
  
  
  
  
subject: Test file edits