old_contents: import logging
  import sys
  import os
  
  if sys.version > "3":
      PY2 = False
  else:
      PY2 = True
  
  
  __version__ = '0.7.9'
  __all__ = ['atomco', 'electro', 'iter', 'matstudio', 'plotter', 'incar']
  
  
  # Initialize logger.
  logger = logging.getLogger("vaspy")
  logger.setLevel(logging.INFO)
  console_hdlr = logging.StreamHandler()
  console_hdlr.setLevel(logging.INFO)
  formatter = logging.Formatter("%(name)s   %(levelname)-8s %(message)s")
  console_hdlr.setFormatter(formatter)
  logger.addHandler(console_hdlr)
  
  
  class VasPy(object):
      def __init__(self, filename):
          """
          Base class to be inherited by all classes in VASPy.
          """
          # Check filename validity.
          if not os.path.exists(filename):
              raise ValueError("{} not exist.".format(filename))
  
          self.filename = filename
  
  
  class LazyProperty(object):
      """
      Descriptor for lazy property.
      """
      def __init__(self, func):
          self.func = func
  
      def __get__(self, instance, owner):
          val = self.func(instance)
          setattr(instance, self.func.__name__, val)
          return val
  
  
new_contents: import logging
  import sys
  import os
  
  if sys.version > "3":
      PY2 = False
  else:
      PY2 = True
  
  
  __version__ = '0.7.10'
  __all__ = ['atomco', 'electro', 'iter', 'matstudio', 'plotter', 'incar']
  
  
  # Initialize logger.
  logger = logging.getLogger("vaspy")
  logger.setLevel(logging.INFO)
  console_hdlr = logging.StreamHandler()
  console_hdlr.setLevel(logging.INFO)
  formatter = logging.Formatter("%(name)s   %(levelname)-8s %(message)s")
  console_hdlr.setFormatter(formatter)
  logger.addHandler(console_hdlr)
  
  
  class VasPy(object):
      def __init__(self, filename):
          """
          Base class to be inherited by all classes in VASPy.
          """
          # Check filename validity.
          if not os.path.exists(filename):
              raise ValueError("{} not exist.".format(filename))
  
          self.filename = filename
  
  
  class LazyProperty(object):
      """
      Descriptor for lazy property.
      """
      def __init__(self, func):
          self.func = func
  
      def __get__(self, instance, owner):
          val = self.func(instance)
          setattr(instance, self.func.__name__, val)
          return val
  
  
subject: Update version number.