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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _GetUsernameFromProfilePath(self, path):
 """Retrieves the username from a Windows profile path. Trailing path path segment are ignored. Args: path (str):
 a Windows path with '\\' as path segment separator. Returns: str: basename which is the last path segment. """

    # Strip trailing key separators.
    while path and path[-1] == '\\':
      path = path[:-1]

    if path:
      _, _, path = path.rpartition('\\')
    return path