build: python 3 compatibility

Ubuntu 16.04 "xenial xerus" does not come with Python 2.x by default.
It is possible to install a python-2.7 package, but this has its own
problem: no `python` or `python2` symlink (see #7717).

This fixes the following scripts to work with python 3:
- `make check` (bctest,py, bitcoin-util-test.py)
- `make translate` (extract_strings_qt.py)
- `make symbols-check` (symbol-check.py)
- `make security-check` (security-check.py)

Explicitly call the python commands using $(PYTHON) instead
of relying on the interpreter line at the top of the scripts.

2 files changed, 71 insertions, 71 deletions

diff --git a/contrib/macdeploy/custom_dsstore.py b/contrib/macdeploy/custom_dsstore.py
index 8481e903a0..03e2325fc0 100755
--- a/contrib/macdeploy/custom_dsstore.py
+++ b/contrib/macdeploy/custom_dsstore.py
@@ -2,7 +2,7 @@
 # Copyright (c) 2013-2015 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 __future__ import division,print_function,unicode_literals
 import biplist
 from ds_store import DSStore
 from mac_alias import Alias
@@ -14,7 +14,7 @@ package_name_ns = sys.argv[2]
 ds = DSStore.open(output_file, 'w+')
 ds['.']['bwsp'] = {
     'ShowStatusBar': False,
-    'WindowBounds': '{{300, 280}, {500, 343}}',
+    'WindowBounds': b'{{300, 280}, {500, 343}}',
     'ContainerShowSidebar': False,
     'SidebarWidth': 0,
     'ShowTabView': False,
@@ -28,7 +28,7 @@ icvp = {
     'gridOffsetX': 0.0,
     'textSize': 12.0,
     'viewOptionsVersion': 1,
-    'backgroundImageAlias': '\x00\x00\x00\x00\x02\x1e\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd1\x94\\\xb0H+\x00\x05\x00\x00\x00\x98\x0fbackground.tiff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x99\xd19\xb0\xf8\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\r\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0b.background\x00\x00\x10\x00\x08\x00\x00\xd1\x94\\\xb0\x00\x00\x00\x11\x00\x08\x00\x00\xd19\xb0\xf8\x00\x00\x00\x01\x00\x04\x00\x00\x00\x98\x00\x0e\x00 \x00\x0f\x00b\x00a\x00c\x00k\x00g\x00r\x00o\x00u\x00n\x00d\x00.\x00t\x00i\x00f\x00f\x00\x0f\x00\x02\x00\x00\x00\x12\x00\x1c/.background/background.tiff\x00\x14\x01\x06\x00\x00\x00\x00\x01\x06\x00\x02\x00\x00\x0cMacintosh HD\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xce\x97\xab\xc3H+\x00\x00\x01\x88[\x88\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02u\xab\x8d\xd1\x94\\\xb0devrddsk\xff\xff\xff\xff\x00\x00\t \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07bitcoin\x00\x00\x10\x00\x08\x00\x00\xce\x97\xab\xc3\x00\x00\x00\x11\x00\x08\x00\x00\xd1\x94\\\xb0\x00\x00\x00\x01\x00\x14\x01\x88[\x88\x00\x16\xa9\t\x00\x08\xfaR\x00\x08\xfaQ\x00\x02d\x8e\x00\x0e\x00\x02\x00\x00\x00\x0f\x00\x1a\x00\x0c\x00M\x00a\x00c\x00i\x00n\x00t\x00o\x00s\x00h\x00 \x00H\x00D\x00\x13\x00\x01/\x00\x00\x15\x00\x02\x00\x14\xff\xff\x00\x00\xff\xff\x00\x00',
+    'backgroundImageAlias': b'\x00\x00\x00\x00\x02\x1e\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd1\x94\\\xb0H+\x00\x05\x00\x00\x00\x98\x0fbackground.tiff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x99\xd19\xb0\xf8\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\r\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0b.background\x00\x00\x10\x00\x08\x00\x00\xd1\x94\\\xb0\x00\x00\x00\x11\x00\x08\x00\x00\xd19\xb0\xf8\x00\x00\x00\x01\x00\x04\x00\x00\x00\x98\x00\x0e\x00 \x00\x0f\x00b\x00a\x00c\x00k\x00g\x00r\x00o\x00u\x00n\x00d\x00.\x00t\x00i\x00f\x00f\x00\x0f\x00\x02\x00\x00\x00\x12\x00\x1c/.background/background.tiff\x00\x14\x01\x06\x00\x00\x00\x00\x01\x06\x00\x02\x00\x00\x0cMacintosh HD\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xce\x97\xab\xc3H+\x00\x00\x01\x88[\x88\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02u\xab\x8d\xd1\x94\\\xb0devrddsk\xff\xff\xff\xff\x00\x00\t \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07bitcoin\x00\x00\x10\x00\x08\x00\x00\xce\x97\xab\xc3\x00\x00\x00\x11\x00\x08\x00\x00\xd1\x94\\\xb0\x00\x00\x00\x01\x00\x14\x01\x88[\x88\x00\x16\xa9\t\x00\x08\xfaR\x00\x08\xfaQ\x00\x02d\x8e\x00\x0e\x00\x02\x00\x00\x00\x0f\x00\x1a\x00\x0c\x00M\x00a\x00c\x00i\x00n\x00t\x00o\x00s\x00h\x00 \x00H\x00D\x00\x13\x00\x01/\x00\x00\x15\x00\x02\x00\x14\xff\xff\x00\x00\xff\xff\x00\x00',
     'backgroundColorBlue': 1.0,
     'iconSize': 96.0,
     'backgroundColorGreen': 1.0,
diff --git a/contrib/macdeploy/macdeployqtplus b/contrib/macdeploy/macdeployqtplus
index 7e6270c743..685ed8e5b8 100755
--- a/contrib/macdeploy/macdeployqtplus
+++ b/contrib/macdeploy/macdeployqtplus
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-
+from __future__ import division, print_function, unicode_literals
 #
 # Copyright (C) 2011  Patrick "p2k" Schneider <me@p2k-network.org>
 #
@@ -201,7 +201,7 @@ class DeploymentInfo(object):
 
 def getFrameworks(binaryPath, verbose):
     if verbose >= 3:
-        print "Inspecting with otool: " + binaryPath
+        print("Inspecting with otool: " + binaryPath)
     otoolbin=os.getenv("OTOOL", "otool")
     otool = subprocess.Popen([otoolbin, "-L", binaryPath], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     o_stdout, o_stderr = otool.communicate()
@@ -222,8 +222,8 @@ def getFrameworks(binaryPath, verbose):
         info = FrameworkInfo.fromOtoolLibraryLine(line.strip())
         if info is not None:
             if verbose >= 3:
-                print "Found framework:"
-                print info
+                print("Found framework:")
+                print(info)
             libraries.append(info)
     
     return libraries
@@ -234,24 +234,24 @@ def runInstallNameTool(action, *args):
 
 def changeInstallName(oldName, newName, binaryPath, verbose):
     if verbose >= 3:
-        print "Using install_name_tool:"
-        print " in", binaryPath
-        print " change reference", oldName
-        print " to", newName
+        print("Using install_name_tool:")
+        print(" in", binaryPath)
+        print(" change reference", oldName)
+        print(" to", newName)
     runInstallNameTool("change", oldName, newName, binaryPath)
 
 def changeIdentification(id, binaryPath, verbose):
     if verbose >= 3:
-        print "Using install_name_tool:"
-        print " change identification in", binaryPath
-        print " to", id
+        print("Using install_name_tool:")
+        print(" change identification in", binaryPath)
+        print(" to", id)
     runInstallNameTool("id", id, binaryPath)
 
 def runStrip(binaryPath, verbose):
     stripbin=os.getenv("STRIP", "strip")
     if verbose >= 3:
-        print "Using strip:"
-        print " stripped", binaryPath
+        print("Using strip:")
+        print(" stripped", binaryPath)
     subprocess.check_call([stripbin, "-x", binaryPath])
 
 def copyFramework(framework, path, verbose):
@@ -274,8 +274,8 @@ def copyFramework(framework, path, verbose):
     
     shutil.copy2(fromPath, toPath)
     if verbose >= 3:
-        print "Copied:", fromPath
-        print " to:", toPath
+        print("Copied:", fromPath)
+        print(" to:", toPath)
 
     permissions = os.stat(toPath)
     if not permissions.st_mode & stat.S_IWRITE:
@@ -288,14 +288,14 @@ def copyFramework(framework, path, verbose):
         if not os.path.exists(linkfrom):
             os.symlink(linkto, linkfrom)
             if verbose >= 2:
-                print "Linked:", linkfrom, "->", linkto
+                print("Linked:", linkfrom, "->", linkto)
         fromResourcesDir = framework.sourceResourcesDirectory
         if os.path.exists(fromResourcesDir):
             toResourcesDir = os.path.join(path, framework.destinationResourcesDirectory)
             shutil.copytree(fromResourcesDir, toResourcesDir, symlinks=True)
             if verbose >= 3:
-                print "Copied resources:", fromResourcesDir
-                print " to:", toResourcesDir
+                print("Copied resources:", fromResourcesDir)
+                print(" to:", toResourcesDir)
         fromContentsDir = framework.sourceVersionContentsDirectory
         if not os.path.exists(fromContentsDir):
             fromContentsDir = framework.sourceContentsDirectory
@@ -304,16 +304,16 @@ def copyFramework(framework, path, verbose):
             shutil.copytree(fromContentsDir, toContentsDir, symlinks=True)
             contentslinkfrom = os.path.join(path, framework.destinationContentsDirectory)
             if verbose >= 3:
-                print "Copied Contents:", fromContentsDir
-                print " to:", toContentsDir
+                print("Copied Contents:", fromContentsDir)
+                print(" to:", toContentsDir)
     elif framework.frameworkName.startswith("libQtGui"): # Copy qt_menu.nib (applies to non-framework layout)
         qtMenuNibSourcePath = os.path.join(framework.frameworkDirectory, "Resources", "qt_menu.nib")
         qtMenuNibDestinationPath = os.path.join(path, "Contents", "Resources", "qt_menu.nib")
         if os.path.exists(qtMenuNibSourcePath) and not os.path.exists(qtMenuNibDestinationPath):
             shutil.copytree(qtMenuNibSourcePath, qtMenuNibDestinationPath, symlinks=True)
             if verbose >= 3:
-                print "Copied for libQtGui:", qtMenuNibSourcePath
-                print " to:", qtMenuNibDestinationPath
+                print("Copied for libQtGui:", qtMenuNibSourcePath)
+                print(" to:", qtMenuNibDestinationPath)
     
     return toPath
 
@@ -326,7 +326,7 @@ def deployFrameworks(frameworks, bundlePath, binaryPath, strip, verbose, deploym
         deploymentInfo.deployedFrameworks.append(framework.frameworkName)
         
         if verbose >= 2:
-            print "Processing", framework.frameworkName, "..."
+            print("Processing", framework.frameworkName, "...")
         
         # Get the Qt path from one of the Qt frameworks
         if deploymentInfo.qtPath is None and framework.isQtFramework():
@@ -334,7 +334,7 @@ def deployFrameworks(frameworks, bundlePath, binaryPath, strip, verbose, deploym
         
         if framework.installName.startswith("@executable_path") or framework.installName.startswith(bundlePath):
             if verbose >= 2:
-                print framework.frameworkName, "already deployed, skipping."
+                print(framework.frameworkName, "already deployed, skipping.")
             continue
         
         # install_name_tool the new id into the binary
@@ -366,7 +366,7 @@ def deployFrameworks(frameworks, bundlePath, binaryPath, strip, verbose, deploym
 def deployFrameworksForAppBundle(applicationBundle, strip, verbose):
     frameworks = getFrameworks(applicationBundle.binaryPath, verbose)
     if len(frameworks) == 0 and verbose >= 1:
-        print "Warning: Could not find any external frameworks to deploy in %s." % (applicationBundle.path)
+        print("Warning: Could not find any external frameworks to deploy in %s." % (applicationBundle.path))
         return DeploymentInfo()
     else:
         return deployFrameworks(frameworks, applicationBundle.path, applicationBundle.binaryPath, strip, verbose)
@@ -444,7 +444,7 @@ def deployPlugins(appBundleInfo, deploymentInfo, strip, verbose):
     
     for pluginDirectory, pluginName in plugins:
         if verbose >= 2:
-            print "Processing plugin", os.path.join(pluginDirectory, pluginName), "..."
+            print("Processing plugin", os.path.join(pluginDirectory, pluginName), "...")
         
         sourcePath = os.path.join(deploymentInfo.pluginPath, pluginDirectory, pluginName)
         destinationDirectory = os.path.join(appBundleInfo.pluginPath, pluginDirectory)
@@ -454,8 +454,8 @@ def deployPlugins(appBundleInfo, deploymentInfo, strip, verbose):
         destinationPath = os.path.join(destinationDirectory, pluginName)
         shutil.copy2(sourcePath, destinationPath)
         if verbose >= 3:
-            print "Copied:", sourcePath
-            print " to:", destinationPath
+            print("Copied:", sourcePath)
+            print(" to:", destinationPath)
         
         if strip:
             runStrip(destinationPath, verbose)
@@ -525,7 +525,7 @@ if config.translations_dir and config.translations_dir[0]:
 
 for p in config.add_resources:
     if verbose >= 3:
-        print "Checking for \"%s\"..." % p
+        print("Checking for \"%s\"..." % p)
     if not os.path.exists(p):
         if verbose >= 1:
             sys.stderr.write("Error: Could not find additional resource file \"%s\"\n" % (p))
@@ -535,7 +535,7 @@ for p in config.add_resources:
 
 if len(config.fancy) == 1:
     if verbose >= 3:
-        print "Fancy: Importing plistlib..."
+        print("Fancy: Importing plistlib...")
     try:
         import plistlib
     except ImportError:
@@ -545,7 +545,7 @@ if len(config.fancy) == 1:
     
     p = config.fancy[0]
     if verbose >= 3:
-        print "Fancy: Loading \"%s\"..." % p
+        print("Fancy: Loading \"%s\"..." % p)
     if not os.path.exists(p):
         if verbose >= 1:
             sys.stderr.write("Error: Could not find fancy disk image plist at \"%s\"\n" % (p))
@@ -559,23 +559,23 @@ if len(config.fancy) == 1:
         sys.exit(1)
     
     try:
-        assert not fancy.has_key("window_bounds") or (isinstance(fancy["window_bounds"], list) and len(fancy["window_bounds"]) == 4)
-        assert not fancy.has_key("background_picture") or isinstance(fancy["background_picture"], str)
-        assert not fancy.has_key("icon_size") or isinstance(fancy["icon_size"], int)
-        assert not fancy.has_key("applications_symlink") or isinstance(fancy["applications_symlink"], bool)
-        if fancy.has_key("items_position"):
+        assert "window_bounds" not in fancy or (isinstance(fancy["window_bounds"], list) and len(fancy["window_bounds"]) == 4)
+        assert "background_picture" not in fancy or isinstance(fancy["background_picture"], str)
+        assert "icon_size" not in fancy or isinstance(fancy["icon_size"], int)
+        assert "applications_symlink" not in fancy or isinstance(fancy["applications_symlink"], bool)
+        if "items_position" in fancy:
             assert isinstance(fancy["items_position"], dict)
-            for key, value in fancy["items_position"].iteritems():
+            for key, value in fancy["items_position"].items():
                 assert isinstance(value, list) and len(value) == 2 and isinstance(value[0], int) and isinstance(value[1], int)
     except:
         if verbose >= 1:
             sys.stderr.write("Error: Bad format of fancy disk image plist at \"%s\"\n" % (p))
         sys.exit(1)
     
-    if fancy.has_key("background_picture"):
+    if "background_picture" in fancy:
         bp = fancy["background_picture"]
         if verbose >= 3:
-            print "Fancy: Resolving background picture \"%s\"..." % bp
+            print("Fancy: Resolving background picture \"%s\"..." % bp)
         if not os.path.exists(bp):
             bp = os.path.join(os.path.dirname(p), bp)
             if not os.path.exists(bp):
@@ -591,7 +591,7 @@ else:
 
 if os.path.exists("dist"):
     if verbose >= 2:
-        print "+ Removing old dist folder +"
+        print("+ Removing old dist folder +")
     
     shutil.rmtree("dist")
 
@@ -607,9 +607,9 @@ else:
 target = os.path.join("dist", "Bitcoin-Qt.app")
 
 if verbose >= 2:
-    print "+ Copying source bundle +"
+    print("+ Copying source bundle +")
 if verbose >= 3:
-    print app_bundle, "->", target
+    print(app_bundle, "->", target)
 
 os.mkdir("dist")
 shutil.copytree(app_bundle, target, symlinks=True)
@@ -619,7 +619,7 @@ applicationBundle = ApplicationBundleInfo(target)
 # ------------------------------------------------
 
 if verbose >= 2:
-    print "+ Deploying frameworks +"
+    print("+ Deploying frameworks +")
 
 try:
     deploymentInfo = deployFrameworksForAppBundle(applicationBundle, config.strip, verbose)
@@ -638,7 +638,7 @@ except RuntimeError as e:
 
 if config.plugins:
     if verbose >= 2:
-        print "+ Deploying plugins +"
+        print("+ Deploying plugins +")
     
     try:
         deployPlugins(applicationBundle, deploymentInfo, config.strip, verbose)
@@ -664,7 +664,7 @@ else:
     for lng_file in add_qt_tr:
         p = os.path.join(qt_tr_dir, lng_file)
         if verbose >= 3:
-            print "Checking for \"%s\"..." % p
+            print("Checking for \"%s\"..." % p)
         if not os.path.exists(p):
             if verbose >= 1:
                 sys.stderr.write("Error: Could not find Qt translation file \"%s\"\n" % (lng_file))
@@ -673,7 +673,7 @@ else:
 # ------------------------------------------------
 
 if verbose >= 2:
-    print "+ Installing qt.conf +"
+    print("+ Installing qt.conf +")
 
 f = open(os.path.join(applicationBundle.resourcesPath, "qt.conf"), "wb")
 f.write(qt_conf)
@@ -682,22 +682,22 @@ f.close()
 # ------------------------------------------------
 
 if len(add_qt_tr) > 0 and verbose >= 2:
-    print "+ Adding Qt translations +"
+    print("+ Adding Qt translations +")
 
 for lng_file in add_qt_tr:
     if verbose >= 3:
-        print os.path.join(qt_tr_dir, lng_file), "->", os.path.join(applicationBundle.resourcesPath, lng_file)
+        print(os.path.join(qt_tr_dir, lng_file), "->", os.path.join(applicationBundle.resourcesPath, lng_file))
     shutil.copy2(os.path.join(qt_tr_dir, lng_file), os.path.join(applicationBundle.resourcesPath, lng_file))
 
 # ------------------------------------------------
 
 if len(config.add_resources) > 0 and verbose >= 2:
-    print "+ Adding additional resources +"
+    print("+ Adding additional resources +")
 
 for p in config.add_resources:
     t = os.path.join(applicationBundle.resourcesPath, os.path.basename(p))
     if verbose >= 3:
-        print p, "->", t
+        print(p, "->", t)
     if os.path.isdir(p):
         shutil.copytree(p, t, symlinks=True)
     else:
@@ -706,10 +706,10 @@ for p in config.add_resources:
 # ------------------------------------------------
 
 if config.sign and 'CODESIGNARGS' not in os.environ:
-    print "You must set the CODESIGNARGS environment variable. Skipping signing."
+    print("You must set the CODESIGNARGS environment variable. Skipping signing.")
 elif config.sign:
     if verbose >= 1:
-        print "Code-signing app bundle %s"%(target,)
+        print("Code-signing app bundle %s"%(target,))
     subprocess.check_call("codesign --force %s %s"%(os.environ['CODESIGNARGS'], target), shell=True)
 
 # ------------------------------------------------
@@ -734,7 +734,7 @@ if config.dmg is not None:
 
     def runHDIUtil(verb, image_basename, **kwargs):
         hdiutil_args = ["hdiutil", verb, image_basename + ".dmg"]
-        if kwargs.has_key("capture_stdout"):
+        if "capture_stdout" in kwargs:
             del kwargs["capture_stdout"]
             run = subprocess.check_output
         else:
@@ -744,7 +744,7 @@ if config.dmg is not None:
                 hdiutil_args.append("-verbose")
             run = subprocess.check_call
         
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             hdiutil_args.append("-" + key)
             if not value is True:
                 hdiutil_args.append(str(value))
@@ -753,9 +753,9 @@ if config.dmg is not None:
     
     if verbose >= 2:
         if fancy is None:
-            print "+ Creating .dmg disk image +"
+            print("+ Creating .dmg disk image +")
         else:
-            print "+ Preparing .dmg disk image +"
+            print("+ Preparing .dmg disk image +")
     
     if config.dmg != "":
         dmg_name = config.dmg
@@ -770,7 +770,7 @@ if config.dmg is not None:
             sys.exit(e.returncode)
     else:
         if verbose >= 3:
-            print "Determining size of \"dist\"..."
+            print("Determining size of \"dist\"...")
         size = 0
         for path, dirs, files in os.walk("dist"):
             for file in files:
@@ -778,14 +778,14 @@ if config.dmg is not None:
         size += int(size * 0.15)
         
         if verbose >= 3:
-            print "Creating temp image for modification..."
+            print("Creating temp image for modification...")
         try:
             runHDIUtil("create", dmg_name + ".temp", srcfolder="dist", format="UDRW", size=size, volname=volname, ov=True)
         except subprocess.CalledProcessError as e:
             sys.exit(e.returncode)
         
         if verbose >= 3:
-            print "Attaching temp image..."
+            print("Attaching temp image...")
         try:
             output = runHDIUtil("attach", dmg_name + ".temp", readwrite=True, noverify=True, noautoopen=True, capture_stdout=True)
         except subprocess.CalledProcessError as e:
@@ -796,13 +796,13 @@ if config.dmg is not None:
         disk_name = m.group(1)
         
         if verbose >= 2:
-            print "+ Applying fancy settings +"
+            print("+ Applying fancy settings +")
         
-        if fancy.has_key("background_picture"):
+        if "background_picture" in fancy:
             bg_path = os.path.join(disk_root, ".background", os.path.basename(fancy["background_picture"]))
             os.mkdir(os.path.dirname(bg_path))
             if verbose >= 3:
-                print fancy["background_picture"], "->", bg_path
+                print(fancy["background_picture"], "->", bg_path)
             shutil.copy2(fancy["background_picture"], bg_path)
         else:
             bg_path = None
@@ -839,8 +839,8 @@ if config.dmg is not None:
 
         itemscript = Template('set position of item "${item}" of container window to {${position}}')
         items_positions = []
-        if fancy.has_key("items_position"):
-            for name, position in fancy["items_position"].iteritems():
+        if "items_position" in fancy:
+            for name, position in fancy["items_position"].items():
                 params = { "item" : name, "position" : ",".join([str(p) for p in position]) }
                 items_positions.append(itemscript.substitute(params))
 
@@ -851,9 +851,9 @@ if config.dmg is not None:
             "background_commands" : "",
             "items_positions" : "\n                   ".join(items_positions)
             }
-        if fancy.has_key("window_bounds"):
+        if "window_bounds" in fancy:
             params["window.bounds"] = ",".join([str(p) for p in fancy["window_bounds"]])
-        if fancy.has_key("icon_size"):
+        if "icon_size" in fancy:
             params["icon_size"] = str(fancy["icon_size"])
         if bg_path is not None:
             # Set background file, then call SetFile to make it invisible.
@@ -873,7 +873,7 @@ if config.dmg is not None:
             print("Error running osascript.")
 
         if verbose >= 2:
-            print "+ Finalizing .dmg disk image +"
+            print("+ Finalizing .dmg disk image +")
             time.sleep(5)
         
         try:
@@ -886,6 +886,6 @@ if config.dmg is not None:
 # ------------------------------------------------
 
 if verbose >= 2:
-    print "+ Done +"
+    print("+ Done +")
 
 sys.exit(0)