calculator_3_levels

The objective of this assignment created 3 levels of calculator

Basic, Medium and Advanced

1. Add, Subtract, Multiply, and Divide
2. Throw exception for divide by zero and test that the exception is thrown
3. Use at least one class, at least one static method, at least one class method
4. Store a history of calculations
5. 100% test coverage, pass pylint, DRY principle
6. Type hints for input parameter types and return types
7. Implement a pytest fixture