Merge pull request #7994 from nnadeau:master

Fixed exceptions, print statements, and long types for gen_pattern.py to be Python 3 compatible (#7994)

* fixed exceptions and print statements to be python 3 compatible; removed long type checks (py3 uses int); whitespace reformatting

* Pulled latest svgfig from upstream

https://github.com/jpivarski/svgfig/commit/f3179a8926508bf0f9021fd4e1f9731c95524a38

doc/pattern_tools/gen_pattern.py

@@ -70,9 +70,9 @@ def main():
         opts, args = getopt.getopt(sys.argv[1:], "Ho:c:r:T:u:s:R:w:h:a:", ["help","output=","columns=","rows=",
                                                                       "type=","units=","square_size=","radius_rate=",
                                                                       "page_width=","page_height=", "page_size="])
-    except getopt.error, msg:
-        print msg
-        print "for help use --help"
+    except getopt.error as msg:
+        print(msg)
+        print("for help use --help")
         sys.exit(2)
     output = "out.svg"
     columns = 8
@@ -89,7 +89,7 @@ def main():
     # process options
     for o, a in opts:
         if o in ("-H", "--help"):
-            print __doc__
+            print(__doc__)
             sys.exit(0)
         elif o in ("-r", "--rows"):
             rows = int(a)