Python之csv檔案從MySQL資料庫匯入匯出

csv檔案匯入mysql資料庫

import pymysql

import csv
import codecs
defget_conn
():    conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='root', db='test_csv', charset='utf8')
return conn
definsert
(cur, sql, args):
cur.execute(sql, args)
defread_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]作為唯一鍵，不能為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')

序號,合同編號,義務人,檔案櫃號,櫃內編號,權利人,放款金額,放款日期,他項權利證編號,抵押物位址,結清出庫日期,備註,地區

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;

mysql資料庫寫入csv檔案

import pymysql

import csv
import codecs
defget_conn
():    conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='root', db='test_csv', charset='utf8')
return conn
defquery_all
(cur, sql, args):
cur.execute(sql, args)
return cur.fetchall()
defread_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')

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