Merge pull request #393 from YashTariyal/main

Calculator-GUI-With-Python

Author: itsyashvardhan

projects/Calculator-GUI-With-Python/app.py

@@ -0,0 +1,43 @@
+from kivy.app import App
+from kivy.uix.button import Button
+from kivy.uix.boxlayout import BoxLayout
+from kivy.uix.gridlayout import GridLayout
+from kivy.uix.label import Label
+
+class myApp(App):
+    def build(self):
+        root_widget = BoxLayout(orientation='vertical')
+        output_label = Label(size_hint_y = 0.75, font_size=50)
+        button_symbols = ('1', '2', '3', '+',
+                          '4', '5', '6', '-',
+                          '7', '8', '9', '.',
+                          '0', '*', '/', '=')
+        button_grid = GridLayout(cols=4, size_hint_y=2)
+        for symbol in button_symbols:
+            button_grid.add_widget(Button(text=symbol))
+
+        clear_button = Button(text = 'Clear', size_hint_y=None, height=100)
+        def print_button_text(instance):
+            output_label.text += instance.text
+        for button in button_grid.children[1:]:
+            button.bind(on_press=print_button_text)
+        def resize_label_text(label, new_height):
+            label.fontsize = 0.5*label.height
+        output_label.bind(height=resize_label_text)
+
+        def evaluate_result(instance):
+            try:
+                output_label.text = str(eval(output_label.text))
+            except SyntaxError:
+                output_label.text = 'Python Syntax error!'
+        button_grid.children[0].bind(on_press=evaluate_result)
+
+        def clear_label(instance):
+            output_label.text = " "
+        clear_button.bind(on_press=clear_label)
+
+        root_widget.add_widget(output_label)
+        root_widget.add_widget(button_grid)
+        root_widget.add_widget(clear_button)
+        return root_widget
+myApp().run()