Write a course_grader function that takes a list of test scores as its parameter. It will add up these test scores and calculate an average score. It should then return a message of "pass" or "fail" depending on these two conditions:

If the average score is greater than or equal to 70 and no single test score is below 50, then return a message of "pass".

If the average score is lower than 70 or at least one test score is below 50, then return a message of "fail".

def course_grader(test_scores): # Your code here

def main(): print(course_grader([100,75,45])) # "fail" print(course_grader([100,70,85])) # "pass" print(course_grader([80,60,60])) # "fail" print(course_grader([80,80,90,30,80])) # "fail" print(course_grader([70,70,70,70,70])) # "pass"

if __name__ == "__main__": main()