How make calculator in python We make a calculator in python using kivy module . Kivy module helps us to make android apps . First wait , If you run a kivy program in your terminal then you see a error like this To solve this problem you have to go kivy docs and follow the instruction of kivy docs. First we have to make a virtual environment and then in the virtual environment you have to install kivy . After that you have to write kivy_venv\Scripts\activate in your terminal and then run the file . If this method not work then write the comment below. LETS START CODING First we import kivy .For this we hve to write from kivy.app import App from kivy.uix.label import Label from kivy.uix.button import Button from kivy.core.window import Window from kivy.uix.gridlayout import GridLayout from kivy.uix.widget import Widget from kivy.lang import ...
How make calculator in python
We make a calculator in python using kivy module . Kivy module helps us to make android apps .
First wait , If you run a kivy program in your terminal then you see a error like this
To solve this problem you have to go kivy docs and follow the instruction of kivy docs.
First we have to make a virtual environment and then in the virtual environment you have to install kivy . After that you have to write kivy_venv\Scripts\activate in your terminal and then run the file . If this method not work then write the comment below.
LETS START CODING
First we import kivy .For this we hve to write
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.core.window import Window
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.lang import Builder
We can't import kivy directly . So, we import these classes which help in making calculator.
After this we have to make CalculatorApp(App) class inherit from App and run the program to check .
After this we have to make another CalculatorGrid(Widget) class which is inherit from Widget and call the class in the CalculatorApp(App)
After this we have to make a function in CalculatorGrid(Widget) . For this we have to write
def calculate(self,calculation):
if calculation:
try:
self.input.text = str(eval(calculation))
except:
self.input.text = "Error"
Now we design the calculator in kv language. kv language is a design language like css
We make claculator.kv file where we design the calculator . For this we have to write
<CalculatorGrid>
input:input
GridLayout:
size:root.width,root.height
cols:1
rows:6
BoxLayout:
TextInput:
id:input
font_size:50
multiline:False
BoxLayout:
Button:
text:"AC"
on_press:input.text = ""
BoxLayout:
Button:
text:"9"
id:nine
on_press:input.text+=self.text
Button:
text:"8"
id:three
on_press:input.text+=self.text
Button:
text:"7"
id:four
on_press:input.text+=self.text
Button:
text:"/"
id:divide
on_press:input.text+=self.text
BoxLayout:
Button:
text:"6"
id:six
on_press:input.text+=self.text
Button:
text:"5"
id:five
on_press:input.text+=self.text
Button:
text:"4"
id:four
on_press:input.text+=self.text
Button:
text:"*"
id:multiple
on_press:input.text+=self.text
BoxLayout:
Button:
text:"3"
id:three
on_press:input.text+=self.text
Button:
text:"2"
id:two
on_press:input.text+=self.text
Button:
text:"1"
id:one
on_press:input.text+=self.text
Button:
text:"-"
id:sub
on_press:input.text+=self.text
BoxLayout:
Button:
text:"00"
id:twozero
on_press:input.text+=self.text
Button:
text:"0"
id:zero
on_press:input.text+=self.text
Button:
text:"="
id:equal
on_press:root.calculate(input.text)
Button:
text:"+"
id:add
on_press:input.text+=self.text
Now we make a object of CalculatorApp() . For this we write CalculatorApp().run()
HERE ARE THE CODE
claculator.py
claculator.kv
OUTPUT
