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Copy pathcalculator.py
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294 lines (284 loc) · 5.82 KB
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from tkinter import *
from tkinter import messagebox
# Funtion for Performing Button Operations.
def insert_text(text):
"""
A Button Listener which inserts the Values to Input Field.
"""
if text_field.get() == "0":
text_field.set("")
text_field.set(text_field.get() + text)
def back_text():
"""
A Funtion for Backspace Funtionality.
"""
text_field.set(text_field.get()[:-1])
if text_field.get() == "":
text_field.set("0")
def clear_text():
"""
A Funtion for Clearing Input Field.
"""
text_field.set("0")
def calculate():
"""
A Funtion for Arithmetic Calculation.
"""
try:
result = eval(text_field.get())
text_field.set(result)
except:
messagebox.showerror("Error", "Error : Inavlid Operation")
text_field.set("0")
# GUI Settings
screen = Tk()
screen.geometry("500x500")
screen.title("Calculator")
screen.configure(bg="#dd29e3")
text_field = StringVar()
text_field.set("0")
# Input Field and Buttons.
input_field = Entry(
screen,
state=DISABLED,
justify=RIGHT,
textvariable=text_field,
font=("Calibri", 22, "bold"),
width=30,
cursor="pirate",
)
button7 = Button(
text="7",
width=4,
height=2,
command=lambda: insert_text("7"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button8 = Button(
text="8",
width=4,
height=2,
command=lambda: insert_text("8"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button9 = Button(
text="9",
width=4,
height=2,
command=lambda: insert_text("9"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonDiv = Button(
text="/",
width=4,
height=2,
command=lambda: insert_text("/"),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonBrace1 = Button(
text="(",
width=4,
height=2,
command=lambda: insert_text("("),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonBrace2 = Button(
text=")",
width=4,
height=2,
command=lambda: insert_text(")"),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
button4 = Button(
text="4",
width=4,
height=2,
command=lambda: insert_text("4"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button5 = Button(
text="5",
width=4,
height=2,
command=lambda: insert_text("5"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button6 = Button(
text="6",
width=4,
height=2,
command=lambda: insert_text("6"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonMul = Button(
text="*",
width=4,
height=2,
command=lambda: insert_text("*"),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonBack = Button(
text="Back",
width=10,
height=2,
command=back_text,
bd=4,
bg="#0339fc",
fg="white",
font=("Helvetica", 15, "bold"),
)
button1 = Button(
text="1",
width=4,
height=2,
command=lambda: insert_text("1"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button2 = Button(
text="2",
width=4,
height=2,
command=lambda: insert_text("2"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button3 = Button(
text="3",
width=4,
height=2,
command=lambda: insert_text("3"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonDif = Button(
text="-",
width=4,
height=2,
command=lambda: insert_text("-"),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonClear = Button(
text="Clear",
width=10,
height=2,
command=clear_text,
bd=4,
bg="#0339fc",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonDot = Button(
text=".",
width=4,
height=2,
command=lambda: insert_text("."),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
button0 = Button(
text="0",
width=4,
height=2,
command=lambda: insert_text("0"),
bd=4,
bg="orange",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonEqual = Button(
text="=",
width=4,
height=2,
command=calculate,
bd=4,
bg="black",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonAdd = Button(
text="+",
width=4,
height=2,
command=lambda: insert_text("+"),
bd=4,
bg="#fc6203",
fg="white",
font=("Helvetica", 15, "bold"),
)
buttonExit = Button(
text="Exit",
width=10,
height=2,
bd=4,
bg="red",
fg="white",
font=("Helvetica", 15, "bold"),
command=lambda: screen.quit(),
)
# Placement of Input Field and Buttons
input_field.place(x=23, y=20, height=40)
button7.place(x=25, y=80)
button8.place(x=100, y=80)
button9.place(x=175, y=80)
buttonDiv.place(x=255, y=80)
buttonBrace1.place(x=335, y=80)
buttonBrace2.place(x=415, y=80)
button4.place(x=25, y=180)
button5.place(x=100, y=180)
button6.place(x=175, y=180)
buttonMul.place(x=255, y=180)
buttonBack.place(x=338, y=180)
button1.place(x=25, y=280)
button2.place(x=100, y=280)
button3.place(x=175, y=280)
buttonDif.place(x=255, y=280)
buttonClear.place(x=338, y=280)
buttonDot.place(x=25, y=380)
button0.place(x=100, y=380)
buttonEqual.place(x=175, y=380)
buttonAdd.place(x=255, y=380)
buttonExit.place(x=338, y=380)
# Run
screen.mainloop()