separate tz resolver

tww.py

@@ -8,6 +8,7 @@ import logging
 import os
 
 import dateparser
+from datetime import datetime
 from pytz.exceptions import UnknownTimeZoneError
 
 FUZZ_THRESHOLD = 70
@@ -202,39 +203,50 @@ def parse_query(query):
     return human_dt, human_tz_loc
 
 
+def resolve_timezone(query):
+    result = ""
+    try:
+        dateparser.parse(str(datetime.now()), settings={'TO_TIMEZONE': query})
+        # if the human_tz_loc contains /, assume it's a timezone which could be
+        # incorrectly written with small letters - need Continent/City
+        if "/" in query:
+            result = timezone_to_normal(query)
+    except UnknownTimeZoneError:
+        from timezonefinder import TimezoneFinder
+        logger.debug("No timezone: {}".format(query))
+        # if the human_tz_loc contains /, assume it's a timezone
+        # the timezone could still be guessed badly, attempt to get the city
+        # e.g.america/dallas
+        if "/" in query:
+            logger.debug("Assuming wrongly guessed tz {}".format(query))
+            query = query.split('/')[-1]
+            logger.debug("Try city {}".format(query))
+        # we don't know this timezone one, assume location
+        # Try to get from local file first
+        location = resolve_location_local(query)
+        if not location:
+            # finally go to remote
+            location = resolve_location_remote(query)
+        tzf = TimezoneFinder()
+        loc_tz = tzf.timezone_at(lat=location.latitude, lng=location.longitude)
+        logger.debug("Timezone: {}".format(loc_tz))
+        result = loc_tz
+    return result
+
+
 def solve_query(human_dt, human_tz_loc):
     try:
         # first try parsing the timezone from user input
         result = dateparser.parse(human_dt, settings={'RETURN_AS_TIMEZONE_AWARE': True})
         logger.debug("human_dt result: {}".format(result))
         if human_tz_loc:
-            # if the human_tz_loc contains /, assume it's a timezone which could be
+            human_tz_loc = resolve_timezone(human_tz_loc)
-            # incorrectly written with small letters - need Continent/City
-            if "/" in human_tz_loc:
-                human_tz_loc = timezone_to_normal(human_tz_loc)
             isofmt = result.isoformat()
             logger.debug("human_dt isofmt: {}".format(isofmt))
             result = dateparser.parse(isofmt, settings={'TO_TIMEZONE': human_tz_loc})
             logger.debug("human_dt to_timezone result: {}".format(result))
     except UnknownTimeZoneError:
-        from timezonefinder import TimezoneFinder
+        loc_tz = resolve_timezone(human_tz_loc)
-        logger.debug("No timezone: {}".format(human_tz_loc))
-        # if the human_tz_loc contains /, assume it's a timezone 
-        # the timezone could still be guessed badly, attempt to get the city
-        # e.g.america/dallas
-        if "/" in human_tz_loc:
-            logger.debug("Assuming wrongly guessed tz {}".format(human_tz_loc))
-            human_tz_loc = human_tz_loc.split('/')[-1]
-            logger.debug("Try city {}".format(human_tz_loc))
-        # we don't know this timezone one, assume location
-        # Try to get from local file first
-        location = resolve_location_local(human_tz_loc)
-        if not location:
-            # finally go to remote
-            location = resolve_location_remote(human_tz_loc)
-        tzf = TimezoneFinder()
-        loc_tz = tzf.timezone_at(lat=location.latitude, lng=location.longitude)
-        logger.debug("Timezone: {}".format(loc_tz))
         result = dateparser.parse(human_dt, settings={'TO_TIMEZONE': loc_tz})
     return result