Write a Python Program To find average and grade for given marks.

marks = []
n = int(input("Enter the number of subject you want to enter"))
for i in range(0,n):
    marks.append(int(input("Enter mark: ")))

avg = sum(marks) / n

if avg >= 90:
    grade = "A"
elif avg >= 75:
    grade = "B"
elif avg >= 60:
    grade = "C"
elif avg >= 40:
    grade = "D"
else:
    grade = "Fail"

print("Average =", avg)
print("Grade =", grade)