def get_conn(): conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='root', db='test_csv', charset='utf8') return conn def insert(cur, sql, args): cur.execute(sql, args) def read_csv_to_mysql(filename): with codecs.open(filename=filename, mode='r', encoding='utf-8') as f: reader = csv.reader(f) head = next(reader) conn = get_conn() cur = conn.cursor() sql = 'insert into tb_csv values(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)' for item in reader: if item[1] is None or item[1] == '': # item[1]作为唯一键，不能为null continue args = tuple(item) print(args) insert(cur, sql=sql, args=args) conn.commit() cur.close() conn.close() if __name__ == '__main__': read_csv_to_mysql('1.csv')

1.csv文件的表头如：

序号,合同编号,义务人,档案柜号,柜内编号,权利人,放款金额,放款日期,他项权利证编号,抵押物地址,结清出库日期,备注,地区

mysql的创建tb_csv表语句

CREATE TABLE tb_csv(
    xuhao VARCHAR(20),
    htcode VARCHAR(20),
    yiwuren VARCHAR(20),
    dagh VARCHAR(20),
    gncode VARCHAR(20),
    quanliren VARCHAR(20),
    fkmoney VARCHAR(20),
    fkdata VARCHAR(20),
    qitacode VARCHAR(20),
    diyaaddr VARCHAR(100),
    jqdata VARCHAR(30),
    beizhu  VARCHAR(30),
    zone    VARCHAR(30),
    PRIMARY KEY(htcode)
)CHARSET=utf8;

这里为了省事，表中的字段都指明varchar类型

MySQL数据库写入csv文件

import pymysql
import csv
import codecs
def get_conn():
    conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='root', db='test_csv', charset='utf8')
    return conn
def query_all(cur, sql, args):
    cur.execute(sql, args)
    return cur.fetchall()
def read_mysql_to_csv(filename):
    with codecs.open(filename=filename, mode='w', encoding='utf-8') as f:
        write = csv.writer(f, dialect='excel')
        conn = get_conn()
        cur = conn.cursor()
        sql = 'select * from tb_csv'
        results = query_all(cur=cur, sql=sql, args=None)
        for result in results:
            print(result)
            write.writerow(result)
if __name__ == '__main__':
    read_mysql_to_csv('2.csv')