support/testing: fix python syntax

Fix three issues with code style in our test infra:
  - 'print' is now a function,
  - exceptions need to be caught-assigned with the 'as' keyword,
  - old-style "%s"%() formatting is deprecated.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com>
[Thomas: drop indices in format strings.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/infra/__init__.py

@@ -34,17 +34,17 @@ def download(dldir, filename):
         os.makedirs(dldir)
 
     tmpfile = tempfile.mktemp(dir=dldir)
-    print "Downloading to {}".format(tmpfile)
+    print("Downloading to {}".format(tmpfile))
 
     try:
         url_fh = urlopen(os.path.join(ARTIFACTS_URL, filename))
         with open(tmpfile, "w+") as tmpfile_fh:
             tmpfile_fh.write(url_fh.read())
-    except (HTTPError, URLError), err:
+    except (HTTPError, URLError) as err:
         os.unlink(tmpfile)
         raise err
 
-    print "Renaming from %s to %s" % (tmpfile, finalpath)
+    print("Renaming from {} to {}".format(tmpfile, finalpath))
     os.rename(tmpfile, finalpath)
     return finalpath
 

support/testing/infra/basetest.py

@@ -46,8 +46,8 @@ class BRTest(unittest.TestCase):
         self.config += "\nBR2_JLEVEL={}\n".format(self.jlevel)
 
     def show_msg(self, msg):
-        print "{} {:40s} {}".format(datetime.datetime.now().strftime("%H:%M:%S"),
-                                    self.testname, msg)
+        print("{} {:40s} {}".format(datetime.datetime.now().strftime("%H:%M:%S"),
+                                    self.testname, msg))
 
     def setUp(self):
         self.show_msg("Starting")