[qa] Switch to py3

Github-Pull: #7814
Rebased-From: fa389d4edc

qa/rpc-tests/invalidblockrequest.py

@@ -1,8 +1,7 @@
-#!/usr/bin/env python2
-#
-# Distributed under the MIT/X11 software license, see the accompanying
+#!/usr/bin/env python3
+# Copyright (c) 2015-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#
 
 from test_framework.test_framework import ComparisonTestFramework
 from test_framework.util import *
@@ -38,7 +37,7 @@ class InvalidBlockRequestTest(ComparisonTestFramework):
 
     def get_tests(self):
         if self.tip is None:
-            self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0)
+            self.tip = int("0x" + self.nodes[0].getbestblockhash(), 0)
         self.block_time = int(time.time())+1
 
         '''
@@ -58,7 +57,7 @@ class InvalidBlockRequestTest(ComparisonTestFramework):
         Now we need that block to mature so we can spend the coinbase.
         '''
         test = TestInstance(sync_every_block=False)
-        for i in xrange(100):
+        for i in range(100):
             block = create_block(self.tip, create_coinbase(height), self.block_time)
             block.solve()
             self.tip = block.sha256