IndexError: when accessing individual characters within a string using their indices, the same rules apply as with lists: if you have a string of N characters, then valid indices range from 0 to N -1, inclusive TypeError: if the message mentions unsupported operand types, this probably means you are trying to perform mathematical operations on characters, not numbers. Be sure to convert characters to numbers using the int function. Computational Thinking For Problem Solving | Assignment 4.6 | Property of Penn Engineering TypeError: a related error would include the message [operation] not supported between instances which means that you may be trying to compare a number to a character. ValueError: when using the int function, the character that you are providing must be a digit, e.g 0, 1, 2, etc. This error indicates that you might be trying to convert a non-numeric character to an int, particularly if the message indicates invalid literal for int(). You may also encounter a TypeError if there is a problem related to the number of parameters in the function definition and the number of arguments provided when invoking the function; these would be indicated by an error message mentioning positional arguments. You should not change the first line of the function definition on line 1, and should only provide one argument when invoking the function at the bottom of your program. After you have run your program using the Run button and believe that it is producing the correct output, accept the terms of the Coursera Honor Code and then click the Submit Quiz button below to submit this assignment and have it graded. A few seconds after you submit the assignment , you will see the result at the top of the screen. If it reads Congratulations! You passed! then you are ready to proceed to the next lesson. However, if it reads Try again once you are ready. then this means that the automatic grading program indicated that your program is not correct. You can find the error message from the grading program beneath your code. In that case, click the Retake button to go back to the quiz and try again. If you believe that your code was correct, be sure to click the Run button before submitting and inspect the result of the print statement that is right before the return statement. This allows you to see the output that your code is producing before it is evaluated. If it looks right, but the automatic grading utility is still indicating that it is incorrect, then post a message on the discussion board to ask for assistance, but please do not post your code so that you do not reveal your solution to other learners. Computational