ch05 > exercisesboolean_functions.pyboolean_functions.pyBoolean functions encapsulate complex boolean logic into a single function call in order to have one place to change if the boolean logic changes.
Write a function, def percentage_to_letter(score=0), that when given an exam percentage (float) as a parameter, returns a string according to this scheme:
>= 90 A
90 >= 80 B
80 >= 70 C
70 >= 60 D
< 60 F
Write a second function, def is_passing(letter=None), that takes a letter (single character string) and returns True if it is a passing grade ("C" or Better) otherwise False.
Write a main function to test your functions. All of the below should happen in your main function:
percentage_to_letter with the user input value as a parameterpercentage_to_letter in a variablepercentage_to_letter as the parameter to is_passingis_passingDon't forget to call your main function last in global scope:
...
# all your other code goes above this call
main()
You should have nothing other than imports, function definitions, and the call to
main()in global scope