fix for python3

bindings/python/example_scripts/gncinvoice_jinja.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 ##@file
@@ -63,7 +63,7 @@ def main(argv=None):
 
         try:
             opts, args = getopt.getopt(argv[1:], "fhlI:t:o:", ["help"])
-        except getopt.error, msg:
+        except getopt.error as msg:
              raise Usage(msg)
 
         for opt in opts:
@@ -105,12 +105,12 @@ def main(argv=None):
                 filename_output = filename_template + ".out"
                 print("no output filename given, will be:", filename_output)
 
-    except Usage, err:
+    except Usage as err:
         if err.msg == "Help:":
             retcode=0
         else:
-            print(>>sys.stderr, "Error:",err.msg)
-            print(>>sys.stderr, "for help use --help")
+            print("Error:", err.msg, file=sys.stderr)
+            print("for help use --help", file=sys.stderr)
             retcode=2
 
         print()

bindings/python/example_scripts/str_methods.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ## @file
 #  @brief Add __str__ and __unicode__ methods to financial objects so that @code print object @endcode leads to human readable results
 """ @package str_methods.py -- Add __str__ and __unicode__ methods to financial objects
@@ -30,7 +30,8 @@
 #   * It seems useful to have an object for each modification. That is because there is some Initialisation to be done.
 #
 
-import gnucash, function_class
+import gnucash
+from gnucash import function_class
 
 # Default values for encoding of strings in GnuCashs Database
 DEFAULT_ENCODING = "UTF-8"