import random

def count_marks(marks_list, bellow, above):
    count = 0
    for mark in marks_list:
        if mark >= bellow and mark <= above:
            count += 1
    print('\nThe number of students that obtained a mark between',
          '{}'.format(bellow), 'and {}'.format(above),
          'were {}'.format(count))

marks = []

for i in range(30):
    marks.append(random.randint(0,10))

count_marks(marks, 9, 10)