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ops = "+-*/^"
def calc(a, b, op):
if op == '+':
return a + b
elif op == '-':
return a - b
elif op == '*':
return a * b
elif op == '/':
return a / b
elif op == '^':
return a ** b
help_menu = "'exit' - quit\n'help' - print this menu\nInput two numbers and an operator separated by spaces.\nExample input: A + B\nAvailable operators: + - * / ^"
print(help_menu)
while True:
instr = input("> ")
if instr == "exit":
break
elif instr == "help":
print(help_menu)
continue
args = instr.split()
if len(args) < 3:
print("Not enough arguments to perform operation.")
continue
try:
args[0] = float(args[0])
except:
print("Invalid first argument.")
continue
try:
args[2] = float(args[2])
except:
print("Invalid second argument.")
continue
if args[1] in ops:
print(calc(args[0], args[2], args[1]))
else:
print("Invalid operation.")
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