要將數(shù)據(jù)分類并計(jì)數(shù),可以使用字典來(lái)存儲(chǔ)數(shù)據(jù)分類的結(jié)果。以下是一個(gè)示例代碼:
data = [1, 2, 3, 1, 2, 1, 3, 4, 5, 4]
count_dict = {}
for item in data:
if item in count_dict:
count_dict[item] += 1
else:
count_dict[item] = 1
print(count_dict)
運(yùn)行以上代碼后,輸出結(jié)果為:
{1: 3, 2: 2, 3: 2, 4: 2, 5: 1}
這樣就可以將數(shù)據(jù)分類并計(jì)數(shù),得到每個(gè)元素出現(xiàn)的次數(shù)。