Fix remaining python3 conventions

qa/rpc-tests/p2p-acceptblock.py

@@ -167,7 +167,7 @@ class AcceptBlockTest(BitcoinTestFramework):
         [ x.sync_with_ping() for x in [test_node, white_node] ]
         assert_equal(self.nodes[0].getblockcount(), 2)
         assert_equal(self.nodes[1].getblockcount(), 2)
-        print "First height 2 block accepted by both nodes"
+        print("First height 2 block accepted by both nodes")
 
         # 3. Send another block that builds on the original tip.
         blocks_h2f = []  # Blocks at height 2 that fork off the main chain

qa/rpc-tests/script_test.py

@@ -81,7 +81,7 @@ def ParseScriptFlags(flag_string):
         if x in flag_map:
             flags |= flag_map[x]
         else:
-            print "Error: unrecognized script flag: ", x
+            print("Error: unrecognized script flag: ", x)
     return flags
 
 '''

qa/zcash/create_benchmark_archive.py

@@ -30,7 +30,7 @@ LD_LIBRARY_PATH=src/leveldb python qa/zcash/create_benchmark_archive.py
 
 def check_deps():
     if subprocess.call(['which', 'find', 'xz', ZCASH_CLI], stdout=subprocess.PIPE):
-        print USAGE
+        print(USAGE)
         sys.exit()
 
 def encode_varint(n):

qa/zcash/create_wallet_200k_utxos.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (c) 2017 The Zcash developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://www.opensource.org/licenses/mit-license.php .
@@ -13,8 +13,6 @@
 # - Archive the resulting /tmp/test###### directory
 #
 
-import sys; assert sys.version_info < (3,), ur"This script does not run under Python 3. Please use Python 2.7.x."
-
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,

qa/zcash/test-depends-sources-mirror.py

@@ -27,10 +27,10 @@ def get_depends_sources_list():
 for filename in get_depends_sources_list():
     resp = requests.head(MIRROR_URL_DIR + filename)
 
-    print "Checking [" + filename + "] ..."
+    print("Checking [" + filename + "] ...")
 
     if resp.status_code != 200:
-	print "FAIL. File not found on server: " + filename
+	print("FAIL. File not found on server: " + filename)
 	sys.exit(1)
 
     expected_size = os.path.getsize(os.path.join(DEPENDS_SOURCES_DIR, filename))

zcutil/make-release.py

@@ -656,7 +656,7 @@ if __name__ == '__main__':
         actualargs = sys.argv
         sys.argv = [sys.argv[0], '--verbose']
 
-        print '=== Self Test ==='
+        print('=== Self Test ===')
         try:
             unittest.main()
         except SystemExit as e:
@@ -664,5 +664,5 @@ if __name__ == '__main__':
                 raise
 
         sys.argv = actualargs
-        print '=== Running ==='
+        print('=== Running ===')
         main()

zcutil/release-notes.py

@@ -76,7 +76,7 @@ def authors_in_release_notes(filename):
 
 ## Sums commits made by contributors in each Zcash release note in ./doc/release-notes and writes to authors.md
 def document_authors():
-    print "Writing contributors documented in release-notes directory to authors.md."
+    print("Writing contributors documented in release-notes directory to authors.md.")
     authors_file = os.path.join(doc_dir, 'authors.md')
     with open(authors_file, 'w') as f:
         f.write('Zcash Contributors\n==================\n\n')