old_contents: import setuptools
  
  qu_ext = setuptools.Extension(
      'quantuccia',
      sources=['pyQuantuccia.cpp']
  )
  
  setuptools.setup(
      name='pyQuantuccia',
      version='0.1.0',
      packages=['pyQuantuccia'],
      ext_modules=[qu_ext]
  )
  
new_contents: import setuptools
  
  qu_ext = setuptools.Extension(
      'quantuccia',
      sources=['src/pyQuantuccia.cpp']
  )
  
  setuptools.setup(
      name='pyQuantuccia',
      version='0.1.0',
      packages=['pyQuantuccia'],
      ext_modules=[qu_ext]
  )
  
subject: Correct the name of the file.