Python My Scientific Calculator Made With Python

Deleted member 1442 · Feb 12, 2021

Hello, I coded a scientific calculator in Python and I decided to share it with you. Questions and comments are welcome.

Python:

from tkinter import *
import tkinter.messagebox
import math

#:)

root = Tk()
root.geometry("650x400+300+300")

root.title("Scientific Calculator by Sago")

switch = None

# Button on press

def btn1_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '1')


def btn2_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '2')


def btn3_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '3')


def btn4_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '4')


def btn5_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '5')


def btn6_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '6')


def btn7_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '7')


def btn8_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '8')


def btn9_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '9')


def btn0_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, '0')


def key_event(*args):
    if disp.get() == '0':
        disp.delete(0, END)


def btnp_clicked():
    pos = len(disp.get())
    disp.insert(pos, '+')


def btnm_clicked():
    pos = len(disp.get())
    disp.insert(pos, '-')


def btnml_clicked():
    pos = len(disp.get())
    disp.insert(pos, '*')


def btnd_clicked():
    pos = len(disp.get())
    disp.insert(pos, '/')


def btnc_clicked(*args):
    disp.delete(0, END)
    disp.insert(0, '0')


def sin_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.sin(math.radians(ans))
        else:
            ans = math.sin(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def cos_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.cos(math.radians(ans))
        else:
            ans = math.cos(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def tan_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.tan(math.radians(ans))
        else:
            ans = math.tan(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def arcsin_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.degrees(math.asin(ans))
        else:
            ans = math.asin(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def arccos_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.degrees(math.acos(ans))
        else:
            ans = math.acos(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def arctan_clicked():
    try:
        ans = float(disp.get())
        if switch is True:
            ans = math.degrees(math.atan(ans))
        else:
            ans = math.atan(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def pow_clicked():
    pos = len(disp.get())
    disp.insert(pos, '**')


def round_clicked():
    try:
        ans = float(disp.get())
        ans = round(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def logarithm_clicked():
    try:
        ans = float(disp.get())
        ans = math.log10(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def fact_clicked():
    try:
        ans = float(disp.get())
        ans = math.factorial(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def sqr_clicked():
    try:
        ans = float(disp.get())
        ans = math.sqrt(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def dot_clicked():
    pos = len(disp.get())
    disp.insert(pos, '.')


def pi_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, str(math.pi))


def e_clicked():
    if disp.get() == '0':
        disp.delete(0, END)
    pos = len(disp.get())
    disp.insert(pos, str(math.e))


def bl_clicked():
    pos = len(disp.get())
    disp.insert(pos, '(')


def br_clicked():
    pos = len(disp.get())
    disp.insert(pos, ')')


def del_clicked():
    pos = len(disp.get())
    display = str(disp.get())
    if display == '':
        disp.insert(0, '0')
    elif display == ' ':
        disp.insert(0, '0')
    elif display == '0':
        pass
    else:
        disp.delete(0, END)
        disp.insert(0, display[0:pos-1])


def conv_clicked():
    global switch
    if switch is None:
        switch = True
        conv_btn['text'] = "Deg"
    else:
        switch = None
        conv_btn['text'] = "Rad"


def ln_clicked():
    try:
        ans = float(disp.get())
        ans = math.log(ans)
        disp.delete(0, END)
        disp.insert(0, str(ans))
    except Exception:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


def mod_clicked():
    pos = len(disp.get())
    disp.insert(pos, '%')


def btneq_clicked(*args):
    try:
        ans = disp.get()
        ans = eval(ans)
        disp.delete(0, END)
        disp.insert(0, ans)

    except:
        tkinter.messagebox.showerror("Value Error", "Check your values and operators")


# Label

data = StringVar()

disp = Entry(root, font="Verdana 20", fg="black", bg="mistyrose", bd=0, justify=RIGHT, insertbackground="#abbab1", cursor="arrow")
disp.bind("<Return>", btneq_clicked)
disp.bind("<Escape>", btnc_clicked)
disp.bind("<Key-1>", key_event)
disp.bind("<Key-2>", key_event)
disp.bind("<Key-3>", key_event)
disp.bind("<Key-4>", key_event)
disp.bind("<Key-5>", key_event)
disp.bind("<Key-6>", key_event)
disp.bind("<Key-7>", key_event)
disp.bind("<Key-8>", key_event)
disp.bind("<Key-9>", key_event)
disp.bind("<Key-0>", key_event)
disp.bind("<Key-.>", key_event)
disp.insert(0, '0')
disp.focus_set()
disp.pack(expand=TRUE, fill=BOTH)

# Row 1 Buttons

btnrow1 = Frame(root, bg="#000000")
btnrow1.pack(expand=TRUE, fill=BOTH)

pi_btn = Button(btnrow1, text="π", font="Segoe 18", relief=GROOVE, bd=0, command=pi_clicked, fg="white", bg="#333333")
pi_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

fact_btn = Button(btnrow1, text=" x! ", font="Segoe 18", relief=GROOVE, bd=0, command=fact_clicked, fg="white", bg="#333333")
fact_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

sin_btn = Button(btnrow1, text="sin", font="Segoe 18", relief=GROOVE, bd=0, command=sin_clicked, fg="white", bg="#333333")
sin_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

cos_btn = Button(btnrow1, text="cos", font="Segoe 18", relief=GROOVE, bd=0, command=cos_clicked, fg="white", bg="#333333")
cos_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

tan_btn = Button(btnrow1, text="tan", font="Segoe 18", relief=GROOVE, bd=0, command=tan_clicked, fg="white", bg="#333333")
tan_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn1 = Button(btnrow1, text="1", font="Segoe 23", relief=GROOVE, bd=0, command=btn1_clicked, fg="white", bg="#333333")
btn1.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn2 = Button(btnrow1, text="2", font="Segoe 23", relief=GROOVE, bd=0,  command=btn2_clicked, fg="white", bg="#333333")
btn2.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn3 = Button(btnrow1, text="3", font="Segoe 23", relief=GROOVE, bd=0, command=btn3_clicked, fg="white", bg="#333333")
btn3.pack(side=LEFT, expand=TRUE, fill=BOTH)

btnp = Button(btnrow1, text="+", font="Segoe 23", relief=GROOVE, bd=0, command=btnp_clicked, fg="white", bg="#333333")
btnp.pack(side=LEFT, expand=TRUE, fill=BOTH)

# Row 2 Buttons

btnrow2 = Frame(root)
btnrow2.pack(expand=TRUE, fill=BOTH)

e_btn = Button(btnrow2, text="e", font="Segoe 18", relief=GROOVE, bd=0, command=e_clicked, fg="white", bg="#333333")
e_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

sqr_btn = Button(btnrow2, text=" √x ", font="Segoe 18", relief=GROOVE, bd=0, command=sqr_clicked, fg="white", bg="#333333")
sqr_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

sinh_btn = Button(btnrow2, text="sin−1", font="Segoe 11 bold", relief=GROOVE, bd=0, command=arcsin_clicked, fg="white", bg="#333333")
sinh_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

cosh_btn = Button(btnrow2, text="cos-1", font="Segoe 11 bold", relief=GROOVE, bd=0, command=arccos_clicked, fg="white", bg="#333333")
cosh_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

tanh_btn = Button(btnrow2, text="tan-1", font="Segoe 11 bold", relief=GROOVE, bd=0, command=arctan_clicked, fg="white", bg="#333333")
tanh_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn4 = Button(btnrow2, text="4", font="Segoe 23", relief=GROOVE, bd=0, command=btn4_clicked, fg="white", bg="#333333")
btn4.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn5 = Button(btnrow2, text="5", font="Segoe 23", relief=GROOVE, bd=0, command=btn5_clicked, fg="white", bg="#333333")
btn5.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn6 = Button(btnrow2, text="6", font="Segoe 23", relief=GROOVE, bd=0, command=btn6_clicked, fg="white", bg="#333333")
btn6.pack(side=LEFT, expand=TRUE, fill=BOTH)

btnm = Button(btnrow2, text="-", font="Segoe 23", relief=GROOVE, bd=0, command=btnm_clicked, fg="white", bg="#333333")
btnm.pack(side=LEFT, expand=TRUE, fill=BOTH)

# Row 3 Buttons

btnrow3 = Frame(root)
btnrow3.pack(expand=TRUE, fill=BOTH)

conv_btn = Button(btnrow3, text="Rad", font="Segoe 12 bold", relief=GROOVE, bd=0, command=conv_clicked, fg="white", bg="#333333")
conv_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

round_btn = Button(btnrow3, text="round", font="Segoe 10 bold", relief=GROOVE, bd=0, command=round_clicked, fg="white", bg="#333333")
round_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

ln_btn = Button(btnrow3, text="ln", font="Segoe 18", relief=GROOVE, bd=0, command=ln_clicked, fg="white", bg="#333333")
ln_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

logarithm_btn = Button(btnrow3, text="log", font="Segoe 17", relief=GROOVE, bd=0, command=logarithm_clicked, fg="white", bg="#333333")
logarithm_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

pow_btn = Button(btnrow3, text="x^y", font="Segoe 17", relief=GROOVE, bd=0, command=pow_clicked, fg="white", bg="#333333")
pow_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn7 = Button(btnrow3, text="7", font="Segoe 23", relief=GROOVE, bd=0, command=btn7_clicked, fg="white", bg="#333333")
btn7.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn8 = Button(btnrow3, text="8", font="Segoe 23", relief=GROOVE, bd=0, command=btn8_clicked, fg="white", bg="#333333")
btn8.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn9 = Button(btnrow3, text="9", font="Segoe 23", relief=GROOVE, bd=0, command=btn9_clicked, fg="white", bg="#333333")
btn9.pack(side=LEFT, expand=TRUE, fill=BOTH)

btnml = Button(btnrow3, text="*", font="Segoe 23", relief=GROOVE, bd=0, command=btnml_clicked, fg="white", bg="#333333")
btnml.pack(side=LEFT, expand=TRUE, fill=BOTH)

# Row 4 Buttons

btnrow4 = Frame(root)
btnrow4.pack(expand=TRUE, fill=BOTH)

mod_btn = Button(btnrow4, text="%", font="Segoe 21", relief=GROOVE, bd=0, command=mod_clicked, fg="white", bg="#333333")
mod_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

bl_btn = Button(btnrow4, text=" ( ", font="Segoe 21", relief=GROOVE, bd=0, command=bl_clicked, fg="white", bg="#333333")
bl_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

br_btn = Button(btnrow4, text=" ) ", font="Segoe 21", relief=GROOVE, bd=0, command=br_clicked, fg="white", bg="#333333")
br_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

dot_btn = Button(btnrow4, text=" • ", font="Segoe 21", relief=GROOVE, bd=0, command=dot_clicked, fg="white", bg="#333333")
dot_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

btnc = Button(btnrow4, text="C", font="Segoe 23", relief=GROOVE, bd=0, command=btnc_clicked, fg="white", bg="#333333")
btnc.pack(side=LEFT, expand=TRUE, fill=BOTH)

del_btn = Button(btnrow4, text="⌫", font="Segoe 20", relief=GROOVE, bd=0, command=del_clicked, fg="white", bg="#333333")
del_btn.pack(side=LEFT, expand=TRUE, fill=BOTH)

btn0 = Button(btnrow4, text="0", font="Segoe 23", relief=GROOVE, bd=0, command=btn0_clicked, fg="white", bg="#333333")
btn0.pack(side=LEFT, expand=TRUE, fill=BOTH)

btneq = Button(btnrow4, text="=", font="Segoe 23", relief=GROOVE, bd=0, command=btneq_clicked, fg="white", bg="#333333")
btneq.pack(side=LEFT, expand=TRUE, fill=BOTH)

btnd = Button(btnrow4, text="/", font="Segoe 23", relief=GROOVE, bd=0, command=btnd_clicked, fg="white", bg="#333333")
btnd.pack(side=LEFT, expand=TRUE, fill=BOTH)


root.mainloop()

Ghost · Feb 15, 2021

This actually looks quite nice! The only things I would change would be the top color bar and the initial position of the window. It opens up on the bottom of my screen, but is cut off by maybe 20-40 pixels with it going behind/under my bottom dock on Windows.

Looks great though! I played around with it and like that I can type in what I want to calculate or click the buttons. I also like that PEMDAS works, so that's a plus considering it's a scientific calculator. The log, tan, sin options, etc are all needed so I'm glad you didn't skip those! Have you considered making a graphing feature to plot points?

----
Other notes:
I personally would have put the GUI buttons and other elements into custom functions that then filter the settings into Tkinter. That way you can change the UI you use relatively easily by modifying your custom functions. It's useful for porting code, converting to other languages etc.

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