Change "is not" to "!=" when checking literals

gooey/gui/components/widgets/bases.py

@@ -183,7 +183,7 @@ class TextContainer(BaseWidget):
     def syncUiState(self, state: FormField):  # type: ignore
         self.widget.setValue(state['value'])  # type: ignore
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
 
 
     def getValue(self) -> t.FieldValue:

gooey/gui/components/widgets/checkbox.py

@@ -71,7 +71,7 @@ class CheckBox(TextContainer):
         checkbox.Enable(state['enabled'])
         self.Show(state['visible'])
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
 
 
 

gooey/gui/components/widgets/dropdown.py

@@ -52,7 +52,7 @@ class Dropdown(TextContainer):
         if state['selected'] is not None:  # type: ignore
             self.setValue(state['selected'])  # type: ignore
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
 
     def getUiState(self) -> t.FormField:
         widget: wx.ComboBox = self.widget

gooey/gui/components/widgets/dropdown_filterable.py

@@ -128,7 +128,7 @@ class FilterableDropdown(Dropdown):
         if state['value'] is not None:
             self.setValue(state['value'])
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
 
     def OnGetItem(self, n):
         return self.model.suggestions[n]

gooey/gui/components/widgets/listbox.py

@@ -51,4 +51,4 @@ class Listbox(TextContainer):
         for string in state['selected']:
             widget.SetStringSelection(string)
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')

gooey/gui/components/widgets/textarea.py

@@ -41,7 +41,7 @@ class Textarea(TextContainer):
     def syncUiState(self, state: FormField):
         self.setValue(state['value'])  # type: ignore
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
 
     def getUiState(self) -> t.FormField:
         return t.TextField(

gooey/gui/components/widgets/textfield.py

@@ -27,5 +27,5 @@ class TextField(TextContainer):
         textctr.Enable(state['enabled'])
         self.Show(state['visible'])
         self.error.SetLabel(state['error'] or '')
-        self.error.Show(state['error'] is not None and state['error'] is not '')
+        self.error.Show(state['error'] is not None and state['error'] != '')
         self.Layout()