在python中，如何对一列中的唯一值进行计数，以逐步增加组中的行数？

from collections import Counter

values = [1, 2, 3, 1, 2, 1, 3, 3, 4, 5, 4, 3, 2]

counts = Counter(values)

unique_values = counts.keys()  # 获取唯一值
value_counts = counts.values()  # 获取计数

for value, count in counts.items():
    print(value, ":", count)

new_value = 3
counts[new_value] += 1