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Code: Alles auswählen

import os

print("Calculator\n")

print("1. Plus")
print("2. Minus")
print("3. Mal")
print("4. Geteilt\n")

def ClearScreen():
	try:
		os.system("cls")	#Windows
		os.system("clear")	#Linux
	except:
		print("Da ist was wohl etwas Schief Gelaufen!")

def plus():
	ClearScreen()
	p1 = float(raw_input("\n\nZahl 1: > "))
	p2 = float(raw_input("Zahl 2: > "))
	answer = p1 + p2
	print(answer)

def minus():
	ClearScreen()
	m1 = float(raw_input("\n\nZahl 1: > "))
	m2 = float(raw_input("Zahl 2: > "))
	answer = m1 - m2
	print(answer)

def times():
	ClearScreen()
	t1 = float(raw_input("\n\nZahl 1: > "))
	t2 = float(raw_input("Zahl 2: > "))
	answer = t1 * t2
	print(answer)	

def divide():
	ClearScreen()
	d1 = float(raw_input("\n\nZahl 1: > "))
	d2 = float(raw_input("Zahl 2: > "))
	answer = d1 / d2 
	print(answer)

eingabe = int(raw_input("> "))

if (eingabe == 1):
	plus()
elif(eingabe == 2):
	minus()
elif(eingabe == 3):
	times()
elif(eingabe == 4):
	divide()
else:
	print("Falsche Eingabe")

Code: Alles auswählen

def get_float(prompt):
    while True:
        try:
            number = float(raw_input(prompt))
            return number
        except ValueError:
            print('Bitte geben Sie eine Zahl ein.')


def get_numbers():
    return get_float('\n\nZahl 1: > '), get_float('Zahl 2: > ')


def print_menu(calculations):
    print("Calculator\n")
    for key in sorted(calculations.keys()):
        print('{}. {}'.format(key, calculations[key][0]))


def plus(p1, p2):
    return p1 + p2


def minus(m1, m2):
    return m1 - m2


def times(t1, t2):
    return t1 * t2


def divide(d1, d2):
    return d1 / d2


calculations = {
    1: ('Plus', plus),
    2: ('Minus', minus),
    3: ('Mal', times),
    4: ('Geteilt', divide)
}

print_menu(calculations)
eingabe = int(raw_input('> '))

if eingabe in calculations:
    number1, number2 = get_numbers()
    result = calculations[eingabe][1](number1, number2)
    print(result)
else:
    print("Falsche Eingabe")