calculator.py

def add(a,b):
    return a+b
def subtract(a,b):
    return a-b
def multiply(a,b):
    return a*b
def divide(a,b):
    return a/b
operations_dict = {
    "+": add,
    "-": subtract,
    "*": multiply,
    "/": divide
}
number1=int(input("enter first number: "))
for symbol in operations_dict:
    print(symbol)
continue_flag=True
while continue_flag:
 op_symbol=input("Pick an operation:")
 number2=int(input("enter next number:"))
 calculator_function=operations_dict[op_symbol]
 output=calculator_function(number1,number2)
 print(f"{number1} {op_symbol} {number2}={output}")

 should_continue=input(f"Enter 'y' to continue calculation with {output} or 'n' to exit").lower()
 if should_continue=='y':
    number1=output
 else:
    continue_flag=False
    print("Bye")