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calculator.py
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calculator.py
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"""CLI application for a prefix-notation calculator."""
from arithmetic import (add, subtract, multiply, divide, square, cube,
power, mod, )
# Replace this with your code
while True:
user_input = input("enter your equation ")
tokens = user_input.split(" ")
if "q" in tokens:
print("Exiting")
break
elif len(tokens) < 2:
print("That's not enough, silly goose!")
continue
elif len(tokens) > 3:
print ("That's too many!")
continue
operator = tokens[0]
num1 = tokens[1]
if len(tokens) < 3:
num2 = "0"
else:
num2 = tokens[2]
if len(tokens) > 3:
num3 = tokens[3]
result = None
if not num1.isdigit() or not num2.isdigit():
print("Those aren't numbers!")
continue
if operator == "+":
result = add(float(num1), float(num2))
elif operator == "-":
result = subtract(float(num1), float(num2))
elif operator == "*":
result = multiply(float(num1), float(num2))
elif operator == "/":
result = divide(float(num1), float(num2))
elif operator == "square":
result = square(float(num1), float(num2))
elif operator == "cube":
result = cube(float(num1), float(num2))
elif operator == "pow":
result = power(float(num1), float(num2))
elif operator == "mod":
result = mod(float(num1), float(num2))
print(result)