Create calculator.py

calculator.py

@@ -0,0 +1,189 @@
+from kivy.app import App
+from kivy.uix.button import Button
+from kivy.uix.label import Label
+from kivy.uix.scrollview import ScrollView
+
+from kivy.uix.boxlayout import BoxLayout
+from kivy.uix.gridlayout import GridLayout
+
+from kivy.config import Config
+Config.set('graphics', 'resizable', 0)
+Config.set('graphics', 'width', 400)
+Config.set('graphics', 'height', 500)
+
+class MainApp(App):
+ font_size = 75
+
+ def add_simvol(self, instance):
+ text = self.label.text
+ if len(text) <= 25:
+ text = text + instance.text
+ self.label.text = text
+
+ def check_char(self, instance):
+ text = self.label.text
+ if text != "":
+ if len(text) <= 25:
+ if text[-1] in ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]:
+ self.label.text = self.label.text + instance.text
+
+ def return_result(self, instance):
+ if self.label.text != "":
+ try:
+ text = self.label.text
+ if "×" in text:
+ text = text.replace("×", "*")
+ if "÷" in text:
+ text = text.replace("÷", "/")
+ if "^" in text:
+ text = text.replace("^", "**")
+ if "√" in text:
+ text = text.replace("√", "**(1/2)")
+
+ text = eval(text)
+ self.label.text = str(text)
+ except Exception:
+ pass
+ self.label.text = "Error"
+
+ def clean(self, instance):
+ self.label.text = ""
+
+ def del_last_simvol(self, instance):
+ text = self.label.text
+ self.label.text = text[:-1]
+
+ def build(self):
+
+ main = BoxLayout(orientation = 'vertical')
+
+ ######Control##########
+ control = GridLayout(cols = 4, 
+ size_hint = [1, .2])
+
+ control.add_widget(Button(text = "C", 
+ font_size = self.font_size,
+ on_press = self.clean))
+
+ control.add_widget(Button(text = "<×", 
+ font_size = self.font_size,
+ on_press = self.del_last_simvol))
+
+ control.add_widget(Button(text = "√", 
+ font_size = self.font_size,
+ on_press = self.check_char))
+
+ control.add_widget(Button(text = "^", 
+ font_size = self.font_size,
+ on_press = self.check_char))
+
+
+ panel = BoxLayout(orientation = 'horizontal')
+
+ ####Keyboard#########
+ keyboard = GridLayout(cols = 3, size_hint = [.6, 1],)
+
+ keyboard.add_widget(Button(
+ text = "7", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "8", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "9", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "4", 
+ font_size = self.font_size,
+ on_press = self.add_simvol)) 
+
+ keyboard.add_widget(Button(
+ text = "5", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "6", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+
+ keyboard.add_widget(Button(
+ text = "1", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "2",
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = "3", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ keyboard.add_widget(Button(
+ text = ".", 
+ font_size = self.font_size,
+ on_press = self.check_char))
+
+ keyboard.add_widget(Button(
+ text = "0", 
+ font_size = self.font_size,
+ on_press = self.add_simvol
+ ))
+
+ keyboard.add_widget(Button(
+ text = "=", 
+ font_size = self.font_size,
+ on_press = self.return_result))
+
+ #####Math operation######
+ math = GridLayout(cols = 1, size_hint = [.2, 1],)
+
+ math.add_widget(Button(
+ text = "÷", 
+ font_size = self.font_size,
+ on_press = self.check_char
+ ))
+
+ math.add_widget(Button(
+ text = "×", 
+ font_size = self.font_size,
+ on_press = self.check_char))
+
+ math.add_widget(Button(
+ text = "-", 
+ font_size = self.font_size,
+ on_press = self.add_simvol))
+
+ math.add_widget(Button(
+ text = "+", 
+ font_size = self.font_size,
+ on_press = self.check_char))
+
+ panel.add_widget(keyboard)
+ panel.add_widget(math)
+
+ display = ScrollView(size_hint_y = .3, do_scroll = True)
+ self.label = Label(text = "", 
+ font_size = 70,
+ size_hint_y = 1)
+
+ display.add_widget(self.label)
+
+ main.add_widget(display)
+ main.add_widget(control)
+ main.add_widget(panel)
+ return main
+
+if __name__ == '__main__':
+ MainApp().run()
+