soren.py

count_from = 100
sub_by = 1
iteration = 0
i = 0

while (count_from >= 0):
    if ((i+1) % 10 == 0):
        iteration += 1
    print(count_from)
    count_from = (count_from - (sub_by + iteration))
    i += 1

Output:

99
98
97
96
95
94
93
92
91
89
87
85
83
81
79
77
75
73
71
68
65
62
59
56
53
50
47
44
41
37
33
29
25
21
17
13
9
5
1```