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The average test grade can be found by dividing the sum of the grades by the total number of grades.

Luckily, we just created an awesome function, grades_sum to compute the sum.

Instructions

1.

Define a function, grades_average, below the grades_sum function that does the following:

  • Has one argument, grades_input, a list
  • Calls grades_sum with grades_input
  • Computes the average of the grades by dividing that sum by float(len(grades_input)).
  • Returns the average.

Call the newly created grades_average function with the list of grades and print the result.

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