For the previous example, if we enter 100/(1+0.1)^2 instead of 100/(1+0.1), we will see the following error message, which tells us that ^ is not supported:
>>>100/(1+0.1)^2 Traceback (most recent call last): File "<psyhell#1>, line 1, in <module> 100/(1+0.1)^2 TypeError: unsupported operand type(s) for ^: 'float' and 'int' >>>
Tip
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At this stage, a new user needs to pay attention to the last sentence of the error message. Obviously, the last line tells us that ^ is not supported. Again, for a power function, we should use double multiplications, **, instead of a karat, ^. In Chapter 2, Using Python as an Ordinary Calculator, we will show that a true power function, pow(), is available.