old_contents: from collections import namedtuple
  __all__ = ['version_tuple', 'version']
  
  _VersionInfo = namedtuple("VersionInfo", 'major minor patch releaselevel')
  version_tuple = _VersionInfo(major=2, minor=0, patch=1, releaselevel="release")
  
  version = f"{version_tuple.major}.{version_tuple.minor}.{version_tuple.patch}"
  if version_tuple.releaselevel != "release":
      version += f"-{version_tuple.releaselevel}"
  
new_contents: from collections import namedtuple
  __all__ = ['version_tuple', 'version']
  
  _VersionInfo = namedtuple("VersionInfo", 'major minor patch releaselevel')
  version_tuple = _VersionInfo(major=2, minor=1, patch=0, releaselevel="release")
  
  version = f"{version_tuple.major}.{version_tuple.minor}.{version_tuple.patch}"
  if version_tuple.releaselevel != "release":
      version += f"-{version_tuple.releaselevel}"
  
subject: Bump version number to v2.1.0