MySQLdb没有插入...我确实有cursor.commit()

Question

我提前为长代码道歉,但它可能是相关的.制作新代码以进行演示也更容易.我可以使用phpMyAdmin对表进行DROP,运行此脚本,然后返回phpMyAdmin并查看它是否创建了表.但是,该表为空,并且此脚本应填充测试行.

import MySQLdb  
def makeTable():  
    dbInfo = { 'username':'livetaor_atowrw', 'password':'~HIDDEN~', \  
    'server':'~HIDDEN~.com', 'base':'livetaor_towing', \  
    'table':'inventory' }  
    try:  
        sql = MySQLdb.connect(user=dbInfo['username'], \  
        passwd=dbInfo['password'], \  
        host=dbInfo['server'], db=dbInfo['base'])  
        cursor = sql.cursor ()  
        cursor.execute ("SELECT VERSION()")  
        cursor.execute ("""   
            CREATE TABLE inventory (   
            id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,   
            itemNumber VARCHAR(24),   
            itemDescription VARCHAR(255),   
            itemCategory VARCHAR(24),   
            itemVendor VARCHAR(48),   
            itemVendorItemNumber VARCHAR(24),   
            itemCost FLOAT,   
            itemMarkup FLOAT,   
            item4Customers BOOL,   
            itemOnReplenishment BOOL,   
            itemReplenishAlert INT,   
            itemBolivarQuantity INT,   
            itemLamarQuantity INT,   
            itemSpringfieldQuantity INT )   
        """)  
        cursor.execute ("""   
            INSERT INTO inventory (   
            itemNumber,   
            itemDescription,   
            itemCategory,   
            itemVendor,   
            itemVendorItemNumber,   
            itemCost,   
            itemMarkup,   
            item4Customers,   
            itemOnReplenishment,   
            itemReplenishAlert,   
            itemBolivarQuantity,   
            itemLamarQuantity,   
            itemSpringfieldQuantity,   
            ) VALUES (   
            'TestItemNumber001',   
            'fictitious item description',   
            'TestCategory',   
            'Scripted Vendor',   
            'ITEM:maketable.py',   
            '1.00',   
            '1.33',   
            '1',   
            '1',  
            '6',    
            '65613',   
            '64759',   
            '65802'   
            )   
        """)  
        cursor.commit()  
        cursor.close()  
        sql.close()  
    except MySQLdb.Error, e:  
        error =  "Error %d: %s" % (e.args[0], e.args[1])  
confirm = None  
confirm = raw_input('Do you know what you are doing? ')  
if confirm == 'YeS':  
    makeTable()  
else:  
    print "Didn't think so. Now, it's probably best to forget about this file."  

Answer 1

关于你的代码有什么问题,有一些猜测,但我将解决你的隐含但未说明的问题.

该问题内容如下:

我的程序运行,没有崩溃,但我的表是空的.这是为什么？

这是一个稍微不同的问题,它不崩溃的原因是因为你明确告诉它不要:

看到这段代码？

except MySQLdb.Error, e:
    error = "Error %d: %s" % (e.args[0], e.args[1])

这会捕获您的异常,并将异常消息和其他位放入错误变量中.

但是,除非您检查该变量并根据其内容采取行动,否则您实际上是在吞下异常.

删除该位并重新执行您的程序,您将找到程序失败的真正原因.

我个人认为,在列出所有列名后,这是SQL中的额外逗号,这里:

itemLamarQuantity,
itemSpringfieldQuantity,        <-- here
) VALUES (
'TestItemNumber001',
'fictitious item description',