Can some one help me solve this problem in Python.

Write calculator program. It starts by asking the user for a number, then an operation. Based on the operation it should either ask for a second number to add(+),subtract(-),multiply(*), or divide(/) OR it should display the result(=). If an non-equals operation was pressed it should keep asking for more and more operations and second operands, until the equals sign is entered as the operation. Example execution below (Assume the user can follow directions, no need to verify they type a number or valid operation):

The output should be in this format:

Enter a number: 5

Enter an operation: +

Enter a number to add: 3

Result -- 8

Enter an operation: -

Enter a number to subtract: 1.2

Result -- 6.8

Enter an operation: =

Final Result -- 6.8