old_contents: # -*- coding: utf-8 -*-
  
  """
  m2bk.utils
  ~~~~~~~~~~
  
  Utilities
  
  :copyright: (c) 2015 by Alejandro Ricoveri
  :license: MIT, see LICENSE for more details.
  
  """
  
  
  def chkstr(s, v):
      """
      Small routine for checking whether a string is empty
      even a string
  
      :param s: the string in question
      :param v: variable name
      """
      if type(s) != str:
          raise TypeError("{var} must be str".format(var=v))
      if not s:
          raise ValueError("{var} cannot be empty".format(var=v))
new_contents: # -*- coding: utf-8 -*-
  
  """
  m2bk.utils
  ~~~~~~~~~~
  
  Utilities
  
  :copyright: (c) 2015 by Alejandro Ricoveri
  :license: MIT, see LICENSE for more details.
  
  """
  
  
  def chkstr(s, v):
      """
      Small routine for checking whether a string is empty
      even a string
  
      :param s: the string in question
      :param v: variable name
      """
      if type(s) != str:
          raise TypeError("{var} must be str".format(var=v))
      if not s:
          raise ValueError("{var} cannot be empty".format(var=v))
  
  def debug():
      import pudb; pu.db
  
subject: debug as a utility function using pudb