如果文件已经按排序
group_id，则可以执行以下操作：
import csvfrom itertools import groupbyfor key, rows in groupby(csv.reader(open("foo.csv")), lambda row: row[0]): with open("%s.txt" % key, "w") as output: for row in rows: output.write(",".join(row) + "n")
如果文件已经按排序
group_id，则可以执行以下操作：
import csvfrom itertools import groupbyfor key, rows in groupby(csv.reader(open("foo.csv")), lambda row: row[0]): with open("%s.txt" % key, "w") as output: for row in rows: output.write(",".join(row) + "n")名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
