fixed OSError unsupported dile type bug when saving chip as .json

ModuleFixTarget.py

@@ -368,16 +368,16 @@ class WndFixTarget(QWidget):
     if not filename:
       return
 
-    #settings.setValue("folders/last_prelocation_folder", QFileInfo(filename).canonicalPath())
-    #_log.info("Saving data in {}".format(filename))
-    #data = self.get_data(as_numpy=True)
-    #df = pd.DataFrame(data)
-    #df.to_csv(filename, float_format="%.6f")
-    #import numpy as np
-    base,ext=os.path.splitext(filename)
-    if ext=='':
-        ext='.json'
-        filename=base+ext
+    filename = str(filename).strip()
+    base, ext = os.path.splitext(filename)
+    ext = ext.strip().lower()
+    if ext == '':
+        ext = '.json'
+        filename = base + ext
+    elif not ext.startswith('.'):
+        ext = f'.{ext}'
+        filename = base + ext
+
     try:
       wnd=app._mainWnd
     except AttributeError:
@@ -387,11 +387,11 @@ class WndFixTarget(QWidget):
       grp=wnd._goTracked
       data=grp.childItems()
 
-    if ext.lower()=='.json':
+    if ext == '.json':
       with open(filename, 'w') as f:
-        json.dump(data, f,cls=MyJsonEncoder, indent=2)#separators=(',', ':')
+        json.dump(data, f, cls=MyJsonEncoder, indent=2)  # separators=(',', ':')
     else:
-      raise(IOError('unsupported file type'))
+      raise IOError('unsupported file type')
     #elif  ext=='yaml':
     #  with open(filename, 'w') as f:
     #    yaml.dump(self._data, f)