code: def rmtree (self, errors='warn'):
          
          import shutil
  
          if errors == 'ignore':
              ignore_errors = True
              onerror = None
          elif errors == 'warn':
              ignore_errors = False
              from .cli import warn
  
              def onerror (func, path, exc_info):
                  warn ('couldn\'t rmtree %s: in %s of %s: %s', self, func.__name__,
                        path, exc_info[1])
          else:
              raise ValueError ('unexpected "errors" keyword %r' % (errors,))
  
          shutil.rmtree (text_type (self), ignore_errors=ignore_errors, onerror=onerror)
          return self
docs: Recursively delete this directory and its contents. The *errors* keyword
          specifies how errors are handled:
  
          "warn" (the default)
            Print a warning to standard error.
          "ignore"
            Ignore errors.