摘要: groupby: import random import numpy as np random.seed() df = pd.DataFrame({'data':['a', 'a', 'b', 'b', 'a'], 'num':['one', 'two', 'one', 'two', 'one'] 阅读全文
posted @ 2023-06-09 16:24 半日闲1 阅读(5) 评论(0) 推荐(0) 编辑