csv文件的读与写

csv文件的写：

with open("1.csv","w",encoding="utf-8",newline="") as file:
    f=csv.writer(file)
    con=["1","2","3"]
    f.writerow(con)
    tes=[("a","b","c"),("d","e","f"),("g","h","j"),("a","b","d"),("a","d","c"),("a","b","d"),("c","d","c")]
    f.writerows(tes)

写是一行一行的写入，写入表头直接用列表["1","2","3"],代表第一行的1，2，3列分别是1，2，3

写入表格内容格式为[(第二行内容)，（第三行内容），（第四行内容）......],元组里面的格式对应表头的列，第一个元素对应第一列，第二个元素对应第二列..

csv文件的读：

with open("xiaoshuo.csv.csv","r",encoding="utf-8") as file:
    bb=csv.reader(file)
    for i in bb:
        print(i) //此时出来的i格式为:
                                    ['1', '2', '3']，是一行一行获取的，要想得到某一列，假设第二
                                    ['a', 'b', 'c']  列是i[1]
                                    ['d', 'e', 'f']
                                    ['g', 'h', 'j']