Fix Python 3 issues

stellar/models.py

@@ -58,11 +58,11 @@ def get_table_name(self, postfix, old=False):
             )
         else:
             return 'stellar_%s' % hashlib.md5(
-                '%s|%s|%s' % (
+                ('%s|%s|%s' % (
                     self.table_name,
                     self.snapshot.hash,
                     postfix
-                )
+                )).encode('utf-8')
             ).hexdigest()[0:16]
 
     def __repr__(self):

stellar/operations.py

@@ -27,7 +27,7 @@ def get_engine_url(raw_conn, database):
 def terminate_database_connections(raw_conn, database):
     logger.debug('terminate_database_connections(%r)', database)
     if raw_conn.engine.dialect.name == 'postgresql':
-        version = map(int, raw_conn.execute('SHOW server_version;').first()[0].split('.'))
+        version = [int(x) for x in raw_conn.execute('SHOW server_version;').first()[0].split('.')]
         pid_column = 'pid' if (version[0] >= 9 and version[1] >= 2) else 'procpid'
 
         raw_conn.execute(

tests/test_models.py

@@ -1,7 +1,19 @@
-from stellar.models import get_unique_hash
+from stellar.models import get_unique_hash, Table, Snapshot
 
 
 def test_get_unique_hash():
     assert get_unique_hash()
     assert get_unique_hash() != get_unique_hash()
     assert len(get_unique_hash()) == 32
+
+
+def test_table():
+    table = Table(
+        table_name='hapsu',
+        snapshot=Snapshot(
+            snapshot_name='snapshot',
+            project_name='myproject',
+            hash='3330484d0a70eecab84554b5576b4553'
+        )
+    )
+    assert len(table.get_table_name('master')) == 24