string_count

from random import randint

#function that checks if input grade (a string) is found, which will increase mark and eventually return
def mark_count(score_list, grade):
  mark = 0
  for score in score_list:
    if score == grade:
      mark += 1
  return mark

#empty list holds randomly generated alphabetical grades from list below; randint used as random list index
scores = []
alphabet = ["a", "b", "c+", "c", "c-", "i"]

for x in range(0, 30):
  chance = randint(0, 5)
  scores.append(alphabet[chance])

#print scores and call function
print(scores)

grades = mark_count(scores, "b")

print("{0} learners got input mark".format(grades))