py2 fix: open doesn't accept encoding attribute

src/Mod/Test/TestPythonSyntax.py

@@ -4,28 +4,30 @@ import ast
 import unittest
 import FreeCAD as App
 
+
 def test_python_syntax(rootdir, whitelist=None):
     whitelist = whitelist or []
     log = []
     for sub_dir, dirs, files in os.walk(rootdir):
         for fn in files:
+            kargs = {}
+            if sys.version_info.major > 3:
+                kargs["encoding"] = "utf-8"
             if (not fn in whitelist) and os.path.splitext(fn)[1] == '.py':
-                with open(os.path.join(sub_dir, fn), encoding='utf-8') as py_file:
+                with open(os.path.join(sub_dir, fn), **kargs) as py_file:
                     try:
                         ast.parse(py_file.read())
-                    except SyntaxError:
-                        log.append(os.path.join(sub_dir, fn))
+                    except SyntaxError as err:
+                        log.append(str(err).replace("<unknown>", os.path.join(sub_dir, fn)))
     message = "\n\n" + "#" * 30 + "\n"
     message += "{} python files are not parseable:\n\n".format(len(log))
-    for i in log:
-        message += i + "\n"
-    message += "#" * 30 + "\n\n"
+    for i, m in enumerate(log):
+        message += str(i + 1) + " " + m + "\n"
     if log:
         raise RuntimeError("there are some files not parse-able with the used python-interpreter" + message)
     else:
         return
 
-
 class PythonSyntaxTestCase(unittest.TestCase):
     """
     Test Case to test python syntax of all python files in FreeCAD
@@ -38,4 +40,5 @@ class PythonSyntaxTestCase(unittest.TestCase):
         
 
     def testAll(self):
-        test_python_syntax(App.getHomePath(), self.whitelist)
+        mod_dir = os.path.join(App.getHomePath(), "Mod")
+        test_python_syntax(mod_dir, self.whitelist)