added workaround for python3 (#369)

lib/location.py

@@ -168,7 +168,11 @@ def load_aliases(aliases_filename):
     aliases_db = {}
     with open(aliases_filename, 'r') as f_aliases:
         for line in f_aliases.readlines():
-            from_, to_ = line.decode('utf-8').split(':', 1)
+            try:
+                from_, to_ = line.decode('utf-8').split(':', 1)
+            except AttributeError:
+                from_, to_ = line.split(':', 1)
+
             aliases_db[location_normalize(from_)] = location_normalize(to_)
     return aliases_db
 

lib/spark.py

@@ -26,14 +26,20 @@ import re
 import math
 import json
 import datetime
-import StringIO
+try:
+    import StringIO
+except:
+    import io as StringIO
 
 import requests
 import diagram
 import pyjq
 import pytz
 import numpy as np
-from astral import Astral, Location
+try:
+    from astral import Astral, Location
+except ImportError:
+    pass
 from scipy.interpolate import interp1d
 from babel.dates import format_datetime
 

lib/wttr_line.py

@@ -17,7 +17,10 @@ import sys
 import re
 import datetime
 import json
-from astral import Astral, Location
+try:
+    from astral import Astral, Location
+except ImportError:
+    pass
 from constants import WWO_CODE, WEATHER_SYMBOL, WIND_DIRECTION
 from weather_data import get_weather_data
 import spark