old_contents: import os
  from setuptools import setup, find_packages
  
  ## This is a Python 3 package only
  from sys import version_info
  if version_info.major != 3:
      print("This package will only work with Python 3. \n" 
            "If you already have Python 3 installed try 'pip3 install guizero'.")
  
  def read(fname):
      return open(os.path.join(os.path.dirname(__file__), fname)).read()
  
  setup(
      name="guizero",
      version="0.2.1",
      author="Laura Sach",
      author_email="laura.sach@raspberrypi.org",
      description="Python module to allow kids to easily create GUIs",
      long_description=read('README.rst'),
      license="BSD",
      keywords=[
          "GUI",
          "GUIzero",
          "interface",
      ],
      url="https://github.com/lawsie/guizero",
      packages=find_packages(),
      classifiers=[
          "Development Status :: 3 - Alpha",
          "Programming Language :: Python :: 3",
          "Topic :: Education",
          "Topic :: Software Development :: User Interfaces",
          "Topic :: Education",
          "Intended Audience :: Education",
          "Intended Audience :: Developers",
          "License :: OSI Approved :: BSD License",
      ],
  )
  
new_contents: import os
  from setuptools import setup, find_packages
  
  ## This is a Python 3 package only
  from sys import version_info
  if version_info.major != 3:
      print("This package will only work with Python 3. \n" 
            "If you already have Python 3 installed try 'pip3 install guizero'.")
  
  def read(fname):
      return open(os.path.join(os.path.dirname(__file__), fname)).read()
  
  setup(
      name="guizero",
      version="0.3.1",
      author="Laura Sach",
      author_email="laura.sach@raspberrypi.org",
      description="Python module to allow kids to easily create GUIs",
      long_description=read('README.rst'),
      license="BSD",
      keywords=[
          "GUI",
          "GUIzero",
          "interface",
      ],
      url="https://github.com/lawsie/guizero",
      packages=find_packages(),
      classifiers=[
          "Development Status :: 3 - Alpha",
          "Programming Language :: Python :: 3",
          "Topic :: Education",
          "Topic :: Software Development :: User Interfaces",
          "Topic :: Education",
          "Intended Audience :: Education",
          "Intended Audience :: Developers",
          "License :: OSI Approved :: BSD License",
      ],
  )
  
subject: Change version no in setup