Use Python 3.x compatible syntax constructs

Avoid print operator, deprected except and
other things covered by statical checks.

Change-Id: I89f9608b977b2d4567300ec82558284dac347c9a
diff --git a/tools/find_stack_traces.py b/tools/find_stack_traces.py
index 3129484..0ce1500 100755
--- a/tools/find_stack_traces.py
+++ b/tools/find_stack_traces.py
@@ -110,7 +110,7 @@
 
 
 def usage():
-    print """
+    print("""
 Usage: find_stack_traces.py <logurl>
 
 Hunts for stack traces in a devstack run. Must provide it a base log url
@@ -118,20 +118,20 @@
 
 Returns a report listing stack traces out of the various files where
 they are found.
-"""
+""")
     sys.exit(0)
 
 
 def print_stats(items, fname, verbose=False):
     errors = len(filter(lambda x: x.level == "ERROR", items))
     traces = len(filter(lambda x: x.level == "TRACE", items))
-    print "%d ERRORS found in %s" % (errors, fname)
-    print "%d TRACES found in %s" % (traces, fname)
+    print("%d ERRORS found in %s" % (errors, fname))
+    print("%d TRACES found in %s" % (traces, fname))
 
     if verbose:
         for item in items:
-            print item
-        print "\n\n"
+            print(item)
+        print("\n\n")
 
 
 def main():
diff --git a/tools/skip_tracker.py b/tools/skip_tracker.py
index c7b0033..1ed6961 100755
--- a/tools/skip_tracker.py
+++ b/tools/skip_tracker.py
@@ -118,8 +118,8 @@
 
     unskips = sorted(set(unskips))
     if unskips:
-        print "The following bugs have been fixed and the corresponding skips"
-        print "should be removed from the test cases:"
-        print
+        print("The following bugs have been fixed and the corresponding skips")
+        print("should be removed from the test cases:")
+        print()
         for bug in unskips:
-            print "  %7s" % bug
+            print("  %7s" % bug)
diff --git a/tools/tempest_coverage.py b/tools/tempest_coverage.py
index 5b926f9..ef2eacd 100755
--- a/tools/tempest_coverage.py
+++ b/tools/tempest_coverage.py
@@ -12,7 +12,7 @@
 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
-#    under the License
+#    under the License.
 
 import json
 import os
@@ -151,14 +151,14 @@
     elif CLI.command == 'stop':
         resp, body = coverage_client.stop_coverage()
         if not resp['status'] == '200':
-            print 'coverage stop failed with: %s:' % (resp['status'] + ': '
-                                                      + body)
+            print('coverage stop failed with: %s:' % (resp['status'] + ': '
+                                                      + body))
             exit(int(resp['status']))
         path = body['path']
         if CLI.output:
             shutil.copytree(path, CLI.output)
         else:
-            print "Data files located at: %s" % path
+            print("Data files located at: %s" % path)
 
     elif CLI.command == 'report':
         if CLI.xml:
@@ -169,8 +169,8 @@
         else:
             resp, body = coverage_client.report_coverage(file=CLI.filename)
         if not resp['status'] == '200':
-            print 'coverage report failed with: %s:' % (resp['status'] + ': '
-                                                        + body)
+            print('coverage report failed with: %s:' % (resp['status'] + ': '
+                                                        + body))
             exit(int(resp['status']))
         path = body['path']
         if CLI.output:
@@ -182,10 +182,10 @@
         else:
             if not CLI.html:
                 path = os.path.dirname(path)
-            print 'Report files located at: %s' % path
+            print('Report files located at: %s' % path)
 
     else:
-        print 'Invalid command'
+        print('Invalid command')
         exit(1)