Extended filenames as dict

Closes #102 (closed)

pyotb/core.py

@@ -792,11 +792,12 @@ class App(OTBObject):
 
             for key, filepath in kwargs.items():
                 if self._out_param_types[key] == otb.ParameterType_OutputImage:
+                    new_ext_fname = gen_ext_fname.copy()
+
                     # grab already set extended filename key/values
                     if "?&" in filepath:
                         filepath, already_set_ext = filepath.split("?&", 1)
-                        # ext_fname prevail over extensions in filepath
-                        new_ext_fname = gen_ext_fname.copy()
+                        # extensions in filepath prevail over `new_ext_fname`
                         new_ext_fname.update(_str2dict(already_set_ext))
 
                     # transform dict to str