adds python3 comparators

Signed-off-by: Arthur Gautier <baloo@gandi.net>

Author: Arthur Gautier

pymysqlreplication/gtid.py

@@ -169,11 +169,6 @@ def __sub__(self, other):
 
         return result
 
-    def __cmp__(self, other):
-        if other.sid != self.sid:
-            return cmp(self.sid, other.sid)
-        return cmp(self.intervals, other.intervals)
-
     def __str__(self):
         """We represent the human value here - a single number
         for one transaction, or a closed interval (decrementing b)"""
@@ -235,6 +230,36 @@ def decode(cls, payload):
             else '%d' % x
             for x in intervals])))
 
+    def __cmp__(self, other):
+        if other.sid != self.sid:
+            return cmp(self.sid, other.sid)
+        return cmp(self.intervals, other.intervals)
+
+    def __eq__(self, other):
+        if other.sid != self.sid:
+            return False
+        return self.intervals == other.intervals
+
+    def __lt__(self, other):
+        if other.sid != self.sid:
+            return self.sid < other.sid
+        return self.intervals < other.intervals
+
+    def __le__(self, other):
+        if other.sid != self.sid:
+            return self.sid <= other.sid
+        return self.intervals <= other.intervals
+
+    def __gt__(self, other):
+        if other.sid != self.sid:
+            return self.sid > other.sid
+        return self.intervals > other.intervals
+
+    def __ge__(self, other):
+        if other.sid != self.sid:
+            return self.sid >= other.sid
+        return self.intervals >= other.intervals
+
 
 class GtidSet(object):
     def __init__(self, gtid_set):
@@ -297,3 +322,6 @@ def decode(cls, payload):
         (n_sid,) = struct.unpack('<Q', payload.read(8))
 
         return cls([Gtid.decode(payload) for _ in range(0, n_sid)])
+
+    def __eq__(self, other):
+        return self.gtids == other.gtids