fval = float(fval_str)
which_num = 2
fval_str = ""
sval_str = ""
op = curr_key
print(curr_key, end='', flush=True)
#Clears the stored memory when "m" is cleared.
if (curr_key == 'm' or curr_key == 'M'):
calculator.clear_mem()
print("Memory Cleared")
print(">", end='', flush=True)
#Inverts the current value's sign when "i" is pressed.
if (curr_key == 'i' or curr_key == 'I'):
result = calculator.invert(result)
fval_str = str(result)
print("Current value inverted. (" + str(result) + ")")
print(">", end='', flush=True)
#Saves current value in the calculator when "s" is pressed.
if (curr_key == 's' or curr_key == 'S'):
calculator.save_mem(result)
print("Value saved!")
print(">", end='', flush=True)
#Resets all values in the calculator when "c" is pressed.
if (curr_key == 'c' or curr_key == 'C'):
fval = 0.0
sval = 0.0
fval_str = ""
def testInvert(self):
self.assertEqual(calc.invert(5), -5)
self.assertEqual(calc.invert(-90), 90)
self.assertEqual(calc.invert(53450), -53450)
print (value)
elif (oper == '-'):
value = calculator.subtract (n1, n2)
print (value)
elif (oper == '*'):
value = calculator.multiply (n1, n2)
print (value)
elif (oper =='/'):
value = calculator.divide (n1, n2) # hey pull up the calcultaor function
print (value)
elif (oper.upper == "I"): # if user inputs lower case or uppercase I
value = calculator.invert (n1)
print (value)
elif (oper == '^'):
value = calculator.power (n1, n2 )
print (value)
elif (oper=='r'):
calculator.recall
elif (op == 's'):
calculator.cur_store
n1= float(input("Enter first number ")) #user enters the first number
n2= float(input("Enter second number ")) #user enters the second number
oper= str(input("Please select operation +, - , * , or / ")) # user selects the operative
def tests_Invert(self):
self.assertEqual(calculator.invert(4), -4)
self.assertEqual(calculator.invert(-15), 15)
self.assertEqual(calculator.invert(99), -99)
if op == '+':
value = calculator.add(float(num_1), float(num_2))
print(num_1, "+", num_2, "=", value)
elif op == '-':
value = calculator.sub(float(num_1), float(num_2))
print(num_1, "-", num_2, "=", value)
elif op == '*':
value = calculator.multi(float(num_1), float(num_2))
print(num_1, "*", num_2, "=", value)
elif op == '/':
value = calculator.divide(float(num_1), float(num_2))
print(num_1, "/", num_2, "=", value)
elif op == 'memory_store':
calculator.memory_store(value)
elif op == 'memory_return':
value = calculator.memory_return()
print = (value)
elif op == 'memory_clear':
calculator.memory_clear
elif op == 'invert':
value = calculator.invert(num_1)
print(value)
elif op == 'power':
value = calculator.power(float(num_1), float(num_2))
print(value)
#check for operator
if (pressedKey == "+" or pressedKey == "-" or pressedKey == "*"
or pressedKey == "/" or pressedKey == "^"):
if (number == 1):
num1 = float(num1Str)
number = 2
num1Str = ""
num2Str = ""
oper = pressedKey
print(pressedKey, end='', flush=True)
#check for and execute calculator functions
if (pressedKey == "I" or pressedKey == "i"):
result = calc.invert(result)
num1Str = str(result)
print(result)
print(">>", end='', flush=True)
if (pressedKey == "C" or pressedKey == "c"):
num1 = 0.0
num2 = 0.0
num1Str = ""
num2Str = ""
number = 1
result = 0.0
expressionIsDone = False
print("Calculator cleared")
print(">>", end='', flush=True)
elif oper == "^":
answer = calculator.pow(num1,num2)
num1 = answer
return (answer)
elif oper == "i" or "I":
answer = calculator.invert(num1)
num1 = answer
return (answer)
elif oper == "c" or "C":
answer = calculator.memClear(num1)
num1 = answer
return ("Memory cleared.")
def test_invert(self):
self.assertEqual(invert(5), -5)
def testInvert(self):
self.assertEqual(calculator.invert(0), 0)
self.assertEqual(calculator.invert(-4), 4)
self.assertEqual(calculator.invert(-11), 11)
print("5.Power")
print("r.Recall")
print("i.Invert")
print("c.Clear")
print("x.Exit")
# while loop for calculation
while (True):
choice = input("Enter choice(1/2/3/4/5/r/i/c/x):")
if choice == 'r':
print(calculator.getMemoryValue())
continue
elif choice == 'i':
print(calculator.invert())
continue
elif choice == 'c':
print(calculator.clearMemory())
continue
elif choice == 'x':
break
if choice != '1' and choice != '2' and choice != '3' and choice != '4' and choice != '5' and choice != 'r' and choice != 'i' and choice != 'c':
print("Invalid choice")
continue
try:
if operator == '':
strleftValue = ""
while (not strleftValue.isdigit()):
strleftValue = input("Enter first number: ")
