old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  import os
  import re
  import subprocess
  
  from setuptools import find_packages, setup
  from setuptools.command.develop import develop
  from setuptools.command.install import install
  from setuptools.command.test import test
  
  __author__ = 'Paweł Zadrożny'
  __copyright__ = 'Copyright (c) 2018, Pawelzny'
  
  with open('README.rst', 'r') as readme_file:
      readme = readme_file.read()
  
  
  def get_version(*file_paths):
      """Retrieves the version from project/__init__.py"""
      filename = os.path.join(os.path.dirname(__file__), *file_paths)
      version_file = open(filename).read()
      version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
                                version_file, re.M)
      if version_match:
          return version_match.group(1)
      raise RuntimeError('Unable to find version string.')
  
  
  class PostDevelopCommand(develop):
      """Post-installation for development mode."""
  
      def run(self):
          subprocess.check_call(['pipenv', 'install', '--dev', '--deploy', '--system'])
          develop.run(self)
  
  
  class TestCommand(test):
      """Run tests"""
  
      def run(self):
          subprocess.check_call(['pytest'])
          test.run(self)
  
  
  setup(
      name='dotty_dict',
      version=get_version('dotty_dict', '__init__.py'),
      description="Dictionary wrapper for quick access to deeply nested keys.",
      long_description=readme,
      license="MIT license",
      author="Paweł Zadrożny @pawelzny",
      author_email='pawel.zny@gmail.com',
      url='https://github.com/pawelzny/dotty_dict',
      packages=find_packages(exclude=('tests', 'docs', 'bin', 'example')),
      package_dir={'dotty_dict': 'dotty_dict'},
      include_package_data=True,
      use_scm_version=True,
      install_requires=['setuptools_scm'],
      zip_safe=False,
      keywords='dot notation dict wrapper helper utils lib',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Natural Language :: English',
          'Topic :: Software Development',
          'Topic :: Software Development :: Libraries :: Python Modules',
          'Programming Language :: Python :: 3 :: Only',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: 3.8',
          'Programming Language :: Python :: Implementation :: CPython',
          'Programming Language :: Python :: Implementation :: PyPy',
          'License :: OSI Approved :: MIT License',
      ],
      cmdclass={
          'develop': PostDevelopCommand,
          'test': TestCommand,
      },
  )
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  import os
  import re
  import subprocess
  
  from setuptools import find_packages, setup
  from setuptools.command.develop import develop
  from setuptools.command.install import install
  from setuptools.command.test import test
  
  __author__ = 'Pawel Zadrozny'
  __copyright__ = 'Copyright (c) 2018, Pawelzny'
  
  with open('README.rst', 'r') as readme_file:
      readme = readme_file.read()
  
  
  def get_version(*file_paths):
      """Retrieves the version from project/__init__.py"""
      filename = os.path.join(os.path.dirname(__file__), *file_paths)
      version_file = open(filename).read()
      version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
                                version_file, re.M)
      if version_match:
          return version_match.group(1)
      raise RuntimeError('Unable to find version string.')
  
  
  class PostDevelopCommand(develop):
      """Post-installation for development mode."""
  
      def run(self):
          subprocess.check_call(['pipenv', 'install', '--dev', '--deploy', '--system'])
          develop.run(self)
  
  
  class TestCommand(test):
      """Run tests"""
  
      def run(self):
          subprocess.check_call(['pytest'])
          test.run(self)
  
  
  setup(
      name='dotty_dict',
      version=get_version('dotty_dict', '__init__.py'),
      description="Dictionary wrapper for quick access to deeply nested keys.",
      long_description=readme,
      license="MIT license",
      author="Pawel Zadrozny @pawelzny",
      author_email='pawel.zny@gmail.com',
      url='https://github.com/pawelzny/dotty_dict',
      packages=find_packages(exclude=('tests', 'docs', 'bin', 'example')),
      package_dir={'dotty_dict': 'dotty_dict'},
      include_package_data=True,
      use_scm_version=True,
      install_requires=['setuptools_scm'],
      zip_safe=False,
      keywords='dot notation dict wrapper helper utils lib',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Natural Language :: English',
          'Topic :: Software Development',
          'Topic :: Software Development :: Libraries :: Python Modules',
          'Programming Language :: Python :: 3 :: Only',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: 3.8',
          'Programming Language :: Python :: Implementation :: CPython',
          'Programming Language :: Python :: Implementation :: PyPy',
          'License :: OSI Approved :: MIT License',
      ],
      cmdclass={
          'develop': PostDevelopCommand,
          'test': TestCommand,
      },
  )
  
subject: Remove Polish letters from setup.py (#70)