python 通过列表元素值截取列表并获取长度

def count_range_in_list(li, min, max):

    ctr =

    for x in li:

        if min <= x <= max:

            ctr +=

    return ctr

list1 = [,,,,,,,,]

print(count_range_in_list(list1, , ))

list2 = ['a','b','c','d','e','f']

print(count_range_in_list(list2, 'a', 'e'))