code: def test_timezone(self):
      dt = datetime.utcnow().replace(
          tzinfo=dateutil_tz.gettz("US/Pacific")
      )
  
      result = self.formatter._format_token(dt, "ZZ")
      assert result == "-07:00" or result == "-08:00"
  
      result = self.formatter._format_token(dt, "Z")
      assert result == "-0700" or result == "-0800"
  
imports: from datetime import datetime
  import pytest
  import pytz
  from dateutil import tz
  from arrow import FORMAT_ATOM, FORMAT_COOKIE, FORMAT_RFC822, FORMAT_RFC850, FORMAT_RFC1036, FORMAT_RFC1123, FORMAT_RFC2822, FORMAT_RFC3339, FORMAT_RSS, FORMAT_W3C
  from .utils import make_full_tz_list
label_desc: Use image node_id 10 for calling the TestFormatterFormatToken obj's underlying member method code with example usage: obj.test_timezone() without return types