Question

我是python的初学者，我有简单的代码插入数据库或从数据库中删除用户信息。我使用HTML表单获取用户信息，并使用python代码删除或将用户信息插入数据库。我的HTML表单有两个提交类型按钮添加和删除。

我正在使用if条件来执行操作，具体取决于按下哪个按钮。（Python3.4，Mysql.connector，在localhost中运行）

Python代码：

#!"C:\python34\python.exe"
import cgitb ,cgi
import sys
import mysql.connector
cgitb.enable()
form = cgi.FieldStorage() 
first_name = form.getvalue('first_name')
addres = form.getvalue('addres')
print("Content-Type: text/html;charset=utf-8")
print()
#print(form)
conn = mysql.connector.connect(host='localhost',port='8051',
                                       database='tabl',
                                       user='root',
                                       password='new')
cursor = conn.cursor()
if "add" in form:
    cursor.execute("""insert into tablename values (%s, %s)""",(first_name,addres))
    print("inserted")

elif "delete" in form:
    cursor.execute("DELETE FROM tablename WHERE fname=%s and location = %s",(first_name,addres))
    print("deleted")

else:
    print ("Couldn't determine which button was pressed.")  

conn.commit()

如果条件我已经给出了打印声明，如果它被插入或删除。但是它不会打印那些语句而不会给服务器错误。如果我删除那些打印语句它将起作用。

请在上面的代码或其他写作方式中说明错误。

错误：

Server error!

The server encountered an internal error and was unable to complete your request.

Error message: 
End of script output before headers: python3.py

If you think this is a server error, please contact the webmaster.

Error 500

localhost
Apache/2.4.2 (Win32) OpenSSL/1.0.1c PHP/5.4.4

if条件使用python时出错

0 个答案: