Python3 Programming Examples

python2delta

python3

def MenuGeneral():
        print ("""************
Calculadora Basica
******************
Opciones de la Calculadora
1) Suma
2) Resta
3) Multiplicacion
4) Division
5) Salir""")
def Calculadora():
    """Funcion Para Calcular Operaciones Aritmeticas"""
    MenuGeneral()
    opc=int(input("Selecione Opcion "))
    while (opc >0 and opc <5):
        x = int(input("Ingrese Numero\n"))
        y = int(input("Ingrese Otro Numero\n"))
        if (opc==1):
            print ("La Suma es:",x+y)
            
        elif(opc==2):
            print ("La Resta es:"+x-y)
            
        elif(opc==3):
            print ("La Multiplicacion es:"+x*y)
            
        elif(opc==4):
            try:
              print ("La Division es:%.2f" %(float(x)/float(y)))
              
            except ZeroDivisionError:
              print ("No se Permite la Division Entre 0")
              
        if (opc!=5):
            MenuGeneral()
            opc = int(input("Selecione Opcion\n"))
Calculadora()
print ("Final del programa")

pythondelta1

python3

def MenuGeneral():
        print ("""************
Calculadora Basica
******************
Opciones de la Calculadora
1) Suma
2) Resta
3) Multiplicacion
4) Division
5) Salir""")
def Calculadora():
    """Funcion Para Calcular Operaciones Aritmeticas"""
    MenuGeneral()
    opc=int(input("Selecione Opcion "))
    while (opc >0 and opc <5):
        x = int(input("Ingrese Numero\n"))
        y = int(input("Ingrese Otro Numero\n"))
        if (opc==1):
            print ("La Suma es:",x+y)
            
        elif(opc==2):
            print ("La Resta es:"+x-y)
            
        elif(opc==3):
            print ("La Multiplicacion es:"+x*y)
            
        elif(opc==4):
            try:
              print ("La Division es:%.2f" %(float(x)/float(y)))
              
            except ZeroDivisionError:
              print ("No se Permite la Division Entre 0")
              
        if (opc!=5):
            MenuGeneral()
            opc = int(input("Selecione Opcion\n"))
Calculadora()
print ("Final del programa")

Execute Python-3 Online

python3

class mathStack:
    def __init__(self):
        self.items = []
        
    def isEmpty(self):
        return self.items == []
        
    def push(self,item):
        self.items.append(item)
        
    def pop(self):
        return self.items.pop()
    
    def peek(self):
        return self.items[len(self.items)-1]
        
    def size(self):
        return len(self.items)
        
    
class mathObject:
    def __init__(self):
        self.number = None
        self.operation = None
        
    def isNumber(self):
        return self.number is type(int)
        
    def isOperation(self):
        return self.operation is type(str)
        
    def setNumber(self, item):
        self.number = item
        
    def setOperation(self,item):
        self.operation = item
        
    def setMathObject(self,item):
        if item is type(int):
            setNumber(item)
        elif item is type(str):
            setOperation(item)
            
class mathEngine:
    def __init__(self):
        self.mathObjs = []
        self.mStack = mathStack()
        self.expression = None
        
    def setExpression(self,exp):
        self.expression = exp
    
    def getExpression(self):
        return self.expression
    
    def splitExpression(self):
        tokens = self.expression.split(" ")
        for index in range(len(tokens)):
            x = mathObject()
            x.setMathObject(tokens)
            self.mathObjs = x
    
            
            
x = mathEngine()
x.setExpression(input())
print(x.getExpression())
x.splitExpression()

fgfh

python3

from Tkinter import *

root = Tk()
frame = Frame(root)
frame.pack()

bottomframe = Frame(root)
bottomframe.pack( side = BOTTOM )

redbutton = Button(frame, text="Red", fg="red")
redbutton.pack( side = LEFT)

greenbutton = Button(frame, text="Brown", fg="brown")
greenbutton.pack( side = LEFT )

bluebutton = Button(frame, text="Blue", fg="blue")
bluebutton.pack( side = LEFT )

blackbutton = Button(bottomframe, text="Black", fg="black")
blackbutton.pack( side = BOTTOM)

root.mainloop()

Execute Python-3 Online

python3

# Hello World program in Python
    
print ("Hello World!");

main2.py

python3

import math as m

float first_variable, second_variable

def differencial_of_constant(first_variable):
    first_variable = float(input())
    print("0")

def differencial_of_x(first_variable):
    y = first_variable
    print("dy = dx")

def differencial_of_pow_x(first_variable, second_variable):
    second_variable = float(input())
    y = first_variable ** second_variable
    print("dy = ", second_variable * first_variable ** (second_variable - 1),"dx")

def differencial_of_pow_a_x(first_variable, second_variable):
    second_variable = float(input())
    y = second_variable ** first_variable
    print("dy = ", second_variable ** first_variable * m.log(second_variable, [m.e]), "dx")

def differencial_of_log_x(first_variable, second_variable):
    second_variable = int(input())
    if first_variable >= 0:
        y = m.log(first_variable, [second_variable])
        print("dy = ", 1 / (first_variable * m.log(second_variable, [m.e])), "dx")
    else:
        print("Error")

def differencial_of_sin(first_variable):
    y = m.sin(first_variable)
    print("dy = ", m.cos(first_variable), "dx")

def differencial_of_cos(first_variable):
    y = m.cos(first_variable)
    print("dy = -", m.sin(first_variable))

def differencial_of_tan(first_variable):
    if m.cos(first_variable) != 0:
        y = m.tan(first_variable)
        print("dy = ", 1 / m.cos(first_variable) ** 2, "dx")
    else:
        print("Error")

def differencial_of_cot(first_variable):
    if m.sin(first_variable) != 0:
        y = 1 / m.tan(first_variable)
        print("dy = -", 1 / m.sin(first_variable))
    else:
        print("Error")

def differencial_of_arcsin(first_variable):
    if first_variable in range(-m.pi / 2, m.pi / 2) and m.abs(first_variable) <= 1:
        print("dy = ", 1 / (m.sqrt(1 - first_variable ** 2)), "dx")
    else:
        print("Error")

def differencial_of_arccos(first_variable):
    if first_variable in range(-m.pi / 2, m.pi / 2) and m.abs(first_variable) <= 1:
        print("dy = -", 1 / m.sqrt((1 - first_variable ** 2)), "dx")
    else:
        print("Error")

def differencial_of_arctan(first_variable):
    print("dy = ", 1 / (1 + first_variable ** 2), "dx")

def differencial_of_arccot(first_variable):
    print("dy = - ", 1 / (1 + first_variable ** 2), "dx")

CALCULATOR

python3

while True:
    print("Welcome To Ahmed's Simple Two Number Calculator")
    print("Please Choose What You Want To Do:")
    print("Enter 'add' For Addition")
    print("Enter 'subtract' For Subtraction")
    print("Enter 'divide' For Division")
    print("Enter 'multiply' For Multiplication")
    print("Enter 'quit' To Quit The Calculator")
    print("Please Enter Your Choice Exactly As Written In The Instructions !")
    print()
    break
while True:
    choice=input()
    
    if choice=="quit":
        break
    elif choice=="add":
        num1 = float(input("Enter A Number"))
        num2 = float(input("Enter Another Number"))
        result = str(num1+num2)
        print()
        print("The Answer Is = "+result)
        print()
    elif choice=="subtract":
        num1 = float(input("Enter A Number"))
        num2 = float(input("Enter Another Number"))
        result = str(num1-num2)
        print()
        print("The Answer Is = "+result)
        print()
    elif choice=="multiply":
        num1 = float(input("Enter A Number"))
        num2 = float(input("Enter Another Number"))
        result = str(num1*num2)
        print()
        print("The Answer Is = "+result)
        print()
    elif choice=="divide":
        num1 = float(input("Enter A Number"))
        num2 = float(input("Enter Another Number"))
        result = str(num1/num2)
        print()
        print("The Answer Is = "+result)
        print()
    else:
        print("!! UNKOWN CHOICE !!\nPLEASE ENTER A VALID CHOICE")
        continue

Template class

python3

example of template class

mylist=('foo','bar','ball','scoop','red')

class template:
    
    def __init__(self,input1):
         self.input1=input1
         
    def print1(self):     
         for item in self.input1:
            if item.startswith('b'):
                print (item)
            elif item.startswith('f'):
                print(item+'..sorry')
            else:
                print(item+' - not for use')

t1=template(mylist)


t1.print1()

Execute Python-3 Online

python3

from functools import reduce

def my_function(a):
    return a**2
    

def using_maps_or_not():
    numbers = [1, 2, 3, 4]
    result = list(map(my_function, numbers))
    
    """
    this alternative is better than the built in function
    map because it is faster
    """
    result2 =  [n**2 for n in numbers]
    
    print(result)
    print(result2)
    

def another_func(a):
    # even numbers return True
    return a % 2 == 0


"""
using filter
takes value and return boolean
"""
def using_filter():
    numbers = [1, 2, 3, 4]

    result = list(filter(another_func, numbers))
    print(result)
    
    result = list(filter(lambda a: a % 2 == 0, numbers))
    print(result)

    result = [n for n in numbers if n % 2 == 0]
    print(result)
    
    """
    if an else statement is needed, place the selection 
    before the for statement
    """
    result = [n if n % 2 == 0 else n +1 for n in numbers ]
    print(result)
    
    
"""
using reduce needs to import functools!
"""
def f(a, b):
    return a if a < b else b
    
    
def main():
    numbers = [1, 2, 3, 4]
    
    result = reduce(f, numbers)
    print(result)
    
    
    
    
if __name__ == '__main__':
    main()

aa2aa

python3

from math import sqrt, floor

def sito(dane):
    # dla każdej liczby z pomiędzy 2 do sqrt(y)
    for i in range(2, floor(sqrt(dane[-1]))):
        # oraz dla każdej wielokrotności i
        for j in range(i*i, dane[-1] + 1, i):
            # jeżeli dana wielokrotność znajduje się na liście (dane) to ją usuwam
            if j in dane:
                dane.remove(j)
    return dane

def nwd(x,y):
    # Zwracamy którąkolwiek z liczb jeżeli są równe
    if x == y:
        return x

    # zamieniamy miejscami x i y jeżeli x jest większe od y
    if x > y:
        x, y = y, x

    # dopóki x jest różne od zera:
    # przypisujemy do x wynik dzielenia modulo y mod x
    # a do y przypisujemy poprzedną wartość x
    while x != 0:
        x, y = y % x, x

    return abs(y)

dane = list(range(41, 1019))
print(sito(dane))

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