fix SyntaxWarning for py38 and remove py33 on travis

.travis.yml

@@ -2,7 +2,6 @@ language: python
 sudo: false
 python:
     - "2.7"
-    - "3.3"
     - "3.4"
     - "3.5"
     - "3.6"

aprslib/parsing/mice.py

@@ -140,15 +140,15 @@ def parse_mice(dstcall, body):
 
     # apply position ambiguity
     # routines adjust longitude to center of the ambiguity box
-    if posambiguity is 4:
+    if posambiguity == 4:
         lngminutes = 30
-    elif posambiguity is 3:
+    elif posambiguity == 3:
         lngminutes = (math.floor(lngminutes/10) + 0.5) * 10
-    elif posambiguity is 2:
+    elif posambiguity == 2:
         lngminutes = math.floor(lngminutes) + 0.5
-    elif posambiguity is 1:
+    elif posambiguity == 1:
         lngminutes = (math.floor(lngminutes*10) + 0.5) / 10.0
-    elif posambiguity is not 0:
+    elif posambiguity != 0:
         raise ParseError("Unsupported position ambiguity: %d" % posambiguity)
 
     longitude += lngminutes / 60.0

tests/test_parse_comment_telemetry.py

@@ -47,7 +47,7 @@ class ParseCommentTelemetry(unittest.TestCase):
 
             bits = None
 
-            if len(vals) is 5 and randint(1, 10) > 5:
+            if len(vals) == 5 and randint(1, 10) > 5:
                 bits = "{0:08b}".format(randint(0, 255))[::-1]
 
             testData = self.genTelem(i, vals, bits)