old_contents: import numpy as np
  
  # the type of float to use throughout the session.
  _FLOATX = 'float32'
  _EPSILON = 10e-8
  
  
  def epsilon():
      return _EPSILON
  
  
  def set_epsilon(e):
      global _EPSILON
      _EPSILON = e
  
  
  def floatx():
      return _FLOATX
  
  
  def set_floatx(floatx):
      global _FLOATX
      if floatx not in {'float32', 'float64'}:
          raise Exception('Unknown floatx type: ' + str(floatx))
      if isinstance(floatx, unicode):
          floatx = floatx.encode('ascii')
      _FLOATX = floatx
  
  
  def cast_to_floatx(x):
      '''Cast a Numpy array to floatx.
      '''
      return np.asarray(x, dtype=_FLOATX)
  
new_contents: import numpy as np
  
  # the type of float to use throughout the session.
  _FLOATX = 'float32'
  _EPSILON = 10e-8
  
  
  def epsilon():
      return _EPSILON
  
  
  def set_epsilon(e):
      global _EPSILON
      _EPSILON = e
  
  
  def floatx():
      return _FLOATX
  
  
  def set_floatx(floatx):
      global _FLOATX
      if floatx not in {'float32', 'float64'}:
          raise Exception('Unknown floatx type: ' + str(floatx))
      floatx = floatx.encode('ascii')
      _FLOATX = floatx
  
  
  def cast_to_floatx(x):
      '''Cast a Numpy array to floatx.
      '''
      return np.asarray(x, dtype=_FLOATX)
  
subject: Fix floatx encoding on Python3