code: def cd_to(path, mkdir=False):
      
      def cd_to_decorator(func):
          @functools.wraps(func)
          def _cd_and_exec(*args, **kwargs):
              with cd(path, mkdir):
                  return func(*args, **kwargs)
          return _cd_and_exec
      return cd_to_decorator
docs: make a generator like cd, but use it for function
  
      Usage::
  
          >>> @cd_to("/")
          ... def say_where():
          ...     print(os.getcwd())
          ...
          >>> say_where()
          /