old_contents: # coding=utf-8
  
  #   Copyright 2012-2013 Thijs Metsch - engjoy UG (haftungsbeschraenkt)
  #
  #   Licensed under the Apache License, Version 2.0 (the "License");
  #   you may not use this file except in compliance with the License.
  #   You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  #   Unless required by applicable law or agreed to in writing, software
  #   distributed under the License is distributed on an "AS IS" BASIS,
  #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  #   See the License for the specific language governing permissions and
  #   limitations under the License.
  
  '''
  Will be preloaded and exported.
  '''
  
  __author__ = 'tmetsch'
  
  from matplotlib import pyplot
  
  params = {'legend.fontsize': 11,
            'legend.linewidth': 1}
  
  fig = pyplot.figure(1, figsize=(3, 3))
  pyplot.rcParams.update(params)
  
  
  def plot():
      '''
      Shows a matplotlib figure.
      '''
      pyplot.show()
      pyplot.clf()
new_contents: # coding=utf-8
  
  '''
  Will be preloaded and exported.
  '''
  
  __author__ = 'tmetsch'
  
  from matplotlib import pyplot
  
  params = {'legend.fontsize': 11,
            'legend.linewidth': 1}
  
  fig = pyplot.figure(1, figsize=(3, 3))
  pyplot.rcParams.update(params)
  
  
  def plot():
      '''
      Shows a matplotlib figure.
      '''
      pyplot.show()
      pyplot.clf()
  
subject: Update preload_external.py