Question

我正在编写python脚本来获取mysql数据库行并复制到excel文件

我正在尝试的代码2.7.6：

from __future__ import print_function
import MySQLdb as mdb

conn = mdb.connect("localhost","username","passwd","db")
table = open("table.csv" , 'w')
with conn:    
    query = "SELECT NAME FROM mytable WHERE H_ID= 5 ORDER BY NAME;"        
    cursor = conn.cursor()
    cursor.execute(query)
    for item in range(cursor.rowcount):            
        row = cursor.fetchone()
        print(row[0],file=table)

如果我在mysql中执行该查询意味着我将获得446行并且在python shell [idle]上打印时也会得到正确的结果，但是当我尝试将输出复制到文件时我能够看到只有341行。可能是什么问题。？

Answer 1

我不知道究竟是什么问题，但是当我用关键字删除并手动关闭文件时，它已得到解决，

下面的代码工作正常。

from __future__ import print_function import MySQLdb as mdb conn = mdb.connect("localhost","username","passwd","db") table = open("table.csv" , 'w') query = "SELECT NAME FROM mytable WHERE H_ID= 5 ORDER BY NAME;" cursor = conn.cursor() cursor.execute(query) for item in range(cursor.rowcount): row = cursor.fetchone() print(row[0],file=table) table.close()

python写入文件正在破碎

1 个答案: