code: def read_file(file_path, default_content=''):
      
      if not os.path.exists(file_path):
          write_file(file_path, default_content)
  
      handler = open(file_path, 'r')
      content = handler.read()
      handler.close()
      return content or default_content
docs: Read file at the specified path.
      If file doesn't exist, it will be created with default-content.
      Returns the file content.