Setup:
======

pip install Pyperclip

conda install -c conda-forge Pyperclip
==============================================================
				** Random Password Generator **
				================================

# Python program to generate random
# password using Tkinter module
import random
import pyperclip
from tkinter import *
from tkinter.ttk import *

# Function for calculation of password


def low():
	entry.delete(0, END)

	# Get the length of password
	length = var1.get()

	lower = "abcdefghijklmnopqrstuvwxyz"
	upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
	digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 !@#$%^&*()"
	password = ""

	# if strength selected is low
	if var.get() == 1:
		for i in range(0, length):
			password = password + random.choice(lower)
		return password

	# if strength selected is medium
	elif var.get() == 0:
		for i in range(0, length):
			password = password + random.choice(upper)
		return password

	# if strength selected is strong
	elif var.get() == 3:
		for i in range(0, length):
			password = password + random.choice(digits)
		return password
	else:
		print("Please choose an option")


# Function for generation of password
def generate():
	password1 = low()
	entry.insert(10, password1)


# Function for copying password to clipboard
def copy1():
	random_password = entry.get()
	pyperclip.copy(random_password)


# Main Function

# create GUI window
root = Tk()
var = IntVar()
var1 = IntVar()

# Title of your GUI window
root.title("Random Password Generator")

# create label and entry to show
# password generated
Random_password = Label(root, text="Password")
Random_password.grid(row=0)
entry = Entry(root)
entry.grid(row=0, column=1)

# create label for length of password
c_label = Label(root, text="Length")
c_label.grid(row=1)

# create Buttons Copy which will copy
# password to clipboard and Generate
# which will generate the password
copy_button = Button(root, text="Copy", command=copy1)
copy_button.grid(row=0, column=2)
generate_button = Button(root, text="Generate", command=generate)
generate_button.grid(row=0, column=3)

# Radio Buttons for deciding the
# strength of password
# Default strength is Medium
radio_low = Radiobutton(root, text="Low", variable=var, value=1)
radio_low.grid(row=1, column=2, sticky='E')
radio_middle = Radiobutton(root, text="Medium", variable=var, value=0)
radio_middle.grid(row=1, column=3, sticky='E')
radio_strong = Radiobutton(root, text="Strong", variable=var, value=3)
radio_strong.grid(row=1, column=4, sticky='E')
combo = Combobox(root, textvariable=var1)

# Combo Box for length of your password
combo['values'] = (8, 9, 10, 11, 12, 13, 14, 15, 16,
				17, 18, 19, 20, 21, 22, 23, 24, 25,
				26, 27, 28, 29, 30, 31, 32, "Length")
combo.current(0)
combo.bind('<<ComboboxSelected>>')
combo.grid(column=1, row=1)

# start the GUI
root.mainloop()
========================================================
					** Simple Calculator **
					========================
# importing Tkinter and math
from tkinter import *
import math

# calc class
class calc:

	def getandreplace(self):

		"""replace x with * and ÷ with /"""
		self.expression = self.e.get()
		self.newtext=self.expression.replace('/','/')
		self.newtext=self.newtext.replace('x','*')


	def equals(self):
		"""when the equal button is pressed"""
		self.getandreplace()
		try:
			# evaluate the expression using the eval function
			self.value= eval(self.newtext) 
		except SyntaxError or NameError:
			self.e.delete(0,END)
			self.e.insert(0,'Invalid Input!')
		else:
			self.e.delete(0,END)
			self.e.insert(0,self.value)

	def squareroot(self):
		"""squareroot method"""
		self.getandreplace()
		try:
			# evaluate the expression using the eval function
			self.value= eval(self.newtext) 
		except SyntaxError or NameError:
			self.e.delete(0,END)
			self.e.insert(0,'Invalid Input!')
		else:
			self.sqrtval=math.sqrt(self.value)
			self.e.delete(0,END)
			self.e.insert(0,self.sqrtval)

	def square(self):
		"""square method"""
		self.getandreplace()
		try:
			#evaluate the expression using the eval function
			self.value= eval(self.newtext) 
		except SyntaxError or NameError:
			self.e.delete(0,END)
			self.e.insert(0,'Invalid Input!')
		else:
			self.sqval=math.pow(self.value,2)
			self.e.delete(0,END)
			self.e.insert(0,self.sqval)

	def clearall(self):
			"""when clear button is pressed,clears the text input area"""
			self.e.delete(0,END)

	def clear1(self):
			self.txt=self.e.get()[:-1]
			self.e.delete(0,END)
			self.e.insert(0,self.txt)

	def action(self,argi):
			"""pressed button's value is inserted into the end of the text area"""
			self.e.insert(END,argi)

	def __init__(self,master):
			"""Constructor method"""
			master.title('Calculator')
			master.geometry()
			self.e = Entry(master)
			self.e.grid(row=0,column=0,columnspan=6,pady=3)
			self.e.focus_set() #Sets focus on the input text area

			# Generating Buttons
			Button(master,text="=",width=11,height=3,fg="blue",
				bg="orange",command=lambda:self.equals()).grid(
									row=4, column=4,columnspan=2)

			Button(master,text='AC',width=5,height=3,
						fg="red", bg="light green",
			command=lambda:self.clearall()).grid(row=1, column=4)

			Button(master,text='C',width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.clear1()).grid(row=1, column=5)

			Button(master,text="+",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action('+')).grid(row=4, column=3)

			Button(master,text="x",width=5,height=3,
					fg="blue",bg="orange",
					command=lambda:self.action('x')).grid(row=2, column=3)

			Button(master,text="-",width=5,height=3,
					fg="red",bg="light green",
					command=lambda:self.action('-')).grid(row=3, column=3)

			Button(master,text="÷",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action('/')).grid(row=1, column=3)

			Button(master,text="%",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.action('%')).grid(row=4, column=2)

			Button(master,text="7",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action('7')).grid(row=1, column=0)

			Button(master,text="8",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.action(8)).grid(row=1, column=1)

			Button(master,text="9",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action(9)).grid(row=1, column=2)

			Button(master,text="4",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.action(4)).grid(row=2, column=0)

			Button(master,text="5",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action(5)).grid(row=2, column=1)

			Button(master,text="6",width=5,height=3,
				fg="white",bg="blue",
				command=lambda:self.action(6)).grid(row=2, column=2)

			Button(master,text="1",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.action(1)).grid(row=3, column=0)

			Button(master,text="2",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action(2)).grid(row=3, column=1)

			Button(master,text="3",width=5,height=3,
				fg="white",bg="blue",
				command=lambda:self.action(3)).grid(row=3, column=2)

			Button(master,text="0",width=5,height=3,
				fg="white",bg="blue",
				command=lambda:self.action(0)).grid(row=4, column=0)

			Button(master,text=".",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.action('.')).grid(row=4, column=1)

			Button(master,text="(",width=5,height=3,
				fg="white",bg="blue",
				command=lambda:self.action('(')).grid(row=2, column=4)

			Button(master,text=")",width=5,height=3,
				fg="blue",bg="orange",
				command=lambda:self.action(')')).grid(row=2, column=5)

			Button(master,text="?",width=5,height=3,
				fg="red",bg="light green",
				command=lambda:self.squareroot()).grid(row=3, column=4)

			Button(master,text="x²",width=5,height=3,
				fg="white",bg="blue",
				command=lambda:self.square()).grid(row=3, column=5)

# Driver Code
root = Tk()

obj=calc(root) # object instantiated

root.mainloop()