Amazing-Python-Scripts

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################################################### Scientific Calculator ###################################################
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################################################## Made By Avdhesh Varshney #################################################
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############################################ (https://github.com/Avdhesh-Varshney) ##########################################
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# Importing Modules
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from tkinter import *
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import tkinter.messagebox as tmsg
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import math as m
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# Initialising Tkinter module
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root = Tk()
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# Fixing the size of the calculator screen
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root.minsize(520, 340)
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root.maxsize(520, 340)
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# Title of the calculator
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root.title("Scientific Calculator")
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root.wm_iconbitmap("calculator.ico")
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sc = StringVar()
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sc = Entry(root, width=31, textvariable=sc,
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           relief=SUNKEN, font="cosmicsansms 20")
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sc.grid(row=0, column=0, columnspan=10, padx=11, pady=12)
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# Helping messages
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def helper():
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    help = '''1. For the following functions please enter the number first and then press the required function:
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sin, cos, tan, log, ln, √, !, rad, degree, 1/x, π, e 
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2. For multiplication with float numbers, say 5*0.4 multiply like 5*4/10'''
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    # Adding message into the menu bar of the calculator
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    tmsg.showinfo("Help", help)
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# About section of the header
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def abt():
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    abt_text = "This calculator was developed using Tkinter, by Avdhesh Varshney.\n\n"
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    abt_text += "A student of Dr. B R Ambedkar National Institute of Technology, Jalandhar.\n\n"
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    abt_text += "Click the link below to access the GitHub account:\n\n"
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    abt_text += "https://github.com/Avdhesh-Varshney"
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    # Appending the link to the message in the about section of the menu bar
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    tmsg.showinfo("About", abt_text)
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# Suggestion to the user of the scientific calculator
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def const():
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    msg = '''If you press constants like:  π and e, 2 times, the result will be square of that constant. 
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That means number of times you press the constant, the result will be constant to the power that number. '''
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    tmsg.showinfo("Help", msg)
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# Initialising main screen/root of the calculator
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mainmenu = Menu(root)
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# Adding menu bar in the calculator
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submenu = Menu(mainmenu, tearoff=0)
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submenu.add_command(label="General", command=helper)
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submenu.add_command(label="Constants", command=const)
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mainmenu.add_cascade(label="Help", menu=submenu)
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# Append the author details
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mainmenu.add_command(label="About", command=abt)
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# Append the exit button
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mainmenu.add_command(label="Exit", command=quit)
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# Finally set the configuration in the screen of the calculator made by Tkinter library
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root.config(menu=mainmenu)
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# Creating a function which helps to calculate the different function in scientific calculator
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def scientificCalc(event):
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    # After event is triggered, performing different operation according to the command of the user
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    key = event.widget
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    text = key['text']
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    val = sc.get()
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    sc.delete(0, END)
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    # Checking the function i.e., which function is triggered by the user
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    # Trigonometric functions
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    if text == "sin":
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        sc.insert(0, m.sin(float(val)))
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    elif text == "cos":
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        sc.insert(0, m.cos(float(val)))
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    elif text == "tan":
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        sc.insert(0, m.tan(float(val)))
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    # Logarithmic functions
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    elif text == "log":
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        if (float(val) <= 0.00):
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            sc.insert(0, "Not Possible")
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        else:
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            sc.insert(0, m.log10(float(val)))
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    elif text == "ln":
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        if (float(val) <= 0.00):
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            sc.insert(0, "Not Possible")
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        else:
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            sc.insert(0, m.log(float(val)))
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    # Exponential functions
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    elif text == "√":
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        sc.insert(0, m.sqrt(float(val)))
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    elif text == "!":
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        sc.insert(0, m.factorial(int(val)))
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    # Angular functions
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    elif text == "rad":
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        sc.insert(0, m.radians(float(val)))
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    elif text == "deg":
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        sc.insert(0, m.degrees(float(val)))
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    # Constants functions
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    elif text == "π":
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        if val == "":
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            ans = str(m.pi)
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            sc.insert(0, ans)
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        else:
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            ans = str(float(val) * (m.pi))
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            sc.insert(0, ans)
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    elif text == "1/x":
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        if (val == "0"):
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            sc.insert(0, "ꝏ")
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        else:
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            sc.insert(0, 1/float(val))
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    elif text == "e":
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        if val == "":
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            sc.insert(0, str(m.e))
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        else:
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            sc.insert(0, str(float(val) * (m.e)))
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# Function to check click events
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def click(event):
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    key = event.widget
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    text = key['text']
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    oldValue = sc.get()
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    sc.delete(0, END)
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    newValue = oldValue + text
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    sc.insert(0, newValue)
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# Clear the calculator screen
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def clr(event):
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    sc.delete(0, END)
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# Delete the entered text or number one by one
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def backspace(event):
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    entered = sc.get()
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    length = len(entered) - 1
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    sc.delete(length, END)
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# Calculate function is triggered
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def calculate(event):
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    answer = sc.get()
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    if "^" in answer:
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        answer = answer.replace("^", "**")
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    answer = eval(answer)
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    sc.delete(0, END)
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    sc.insert(0, answer)
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# Initialising the user interface of the calculator
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class Calculator:
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    def __init__(self, txt, r, c, funcName, color="black"):
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        self.var = Button(root, text=txt, padx=3, pady=5,
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                          fg="white", bg=color, width=10, font="cosmicsansms 12")
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        self.var.bind("<Button-1>", funcName)
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        self.var.grid(row=r, column=c)
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# Adding labels on the different buttons with name, color, function, and indexes
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# Trignometric fuctions
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btn0 = Calculator("sin", 1, 0, scientificCalc, "grey")
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btn1 = Calculator("cos", 1, 1, scientificCalc, "grey")
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btn2 = Calculator("tan", 1, 2, scientificCalc, "grey")
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# Logarithmic functions
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btn3 = Calculator("log", 1, 3, scientificCalc)
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btn4 = Calculator("ln", 1, 4, scientificCalc)
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# Brackets
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btn5 = Calculator("(", 2, 0, click)
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btn6 = Calculator(")", 2, 1, click)
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# Exponential functions
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btn7 = Calculator("^", 2, 2, click)
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btn8 = Calculator("√", 2, 3, scientificCalc)
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btn9 = Calculator("!", 2, 4, scientificCalc)
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# Constant and Angular functions
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btn10 = Calculator("π", 3, 0, scientificCalc, "blue")
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btn11 = Calculator("1/x", 3, 1, scientificCalc)
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btn12 = Calculator("deg", 3, 2, scientificCalc)
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btn13 = Calculator("rad", 3, 3, scientificCalc)
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btn14 = Calculator("e", 3, 4, scientificCalc, "blue")
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# Basic Arithmetic operators
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btn15 = Calculator("/", 4, 0, click, "#DBA800")
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btn16 = Calculator("*", 4, 1, click, "#DBA800")
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btn17 = Calculator("-", 4, 2, click, "#DBA800")
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btn18 = Calculator("+", 4, 3, click, "#DBA800")
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btn19 = Calculator("%", 4, 4, click, "#DBA800")
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# Numbering Buttons
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btn20 = Calculator("9", 5, 0, click)
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btn21 = Calculator("8", 5, 1, click)
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btn22 = Calculator("7", 5, 2, click)
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btn23 = Calculator("6", 5, 3, click)
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btn24 = Calculator("5", 5, 4, click)
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btn25 = Calculator("4", 6, 0, click)
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btn26 = Calculator("3", 6, 1, click)
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btn27 = Calculator("2", 6, 2, click)
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btn28 = Calculator("1", 6, 3, click)
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btn29 = Calculator("0", 6, 4, click)
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# Some special buttons
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btn30 = Calculator("C", 7, 0, clr, "red")
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btn31 = Calculator("⌦", 7, 1, backspace, "red")
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btn32 = Calculator("00", 7, 2, click)
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btn33 = Calculator(".", 7, 3, click)
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btn34 = Calculator("=", 7, 4, calculate)
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# Program Starts
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root.mainloop()
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