将tkinter上的条目保存到sqlite3

Question

提前感谢您的帮助！在

我一直在网上寻找解决方案，但一直在努力寻找。我试图将一些数据从tkinter上的entry文本框保存到SQLite3中的一个表中，但是无论我尝试什么，每次都会得到相同的错误。代码如下。在

请注意，我几天前才开始从youtube视频学习编码。抱歉，如果这真的很简单！在

**python file code**

from tkinter import *
import sqlite3
import tkinter.messagebox

# connect to database
conn = sqlite3.connect("RMS.db")
c = conn.cursor()



# tkinter window
class Application:
    def __init__(self, master):
        self.master = master

        # Creating frames in the master
        self.left = Frame(master, width=200, height=60, bg="grey")
        self.left.pack(side=LEFT)

        self.right = Frame(master, width=0, height=0, bg="grey")
        self.right.pack(side=RIGHT)

        # labels for window
        self.driverlevel = Label(self.left, text="Driver Level:", font="calabri 12 bold", fg="white", bg="grey")
        self.driverlevel.place(x=1, y=2)

        # Entries for left window
        self.driverlevel_ent = Entry(self.left, width=20)
        self.driverlevel_ent.place(x=5, y=27)

        # Save Button
        self.submit = Button(self.left, text="Add", font="calabri 12 bold", fg="white", bg="grey", command=self.addlevel)
        self.submit.place(x=140, y=15)

    def addlevel(self):
        self.val1 = self.driverlevel_ent.get()

        if self.val1 == "":
            tkinter.messagebox.showinfo("Warning", "Please Enter a Value")
        else:
            sql = "INSERT INTO 'driverlevel' (Level,) VALUES(?,)"
            c.execute(sql, (self.val1))
            conn.commit()
            tkinter.messagebox.showinfo("Success", "Driver Level Added")


# objects
root = Tk()
b = Application(root)
root.geometry("200x60+0+0")
root.resizable(False, False)
root.title("Add Driver Level")

root.mainloop()


**error message when saving**

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\*****\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "C:/Users/*****/PycharmProjects/******/driverlevel.py", line 41, in addlevel
    c.execute(sql, (self.val1))
sqlite3.OperationalError: near ")": syntax error

不知道如何克服这个。。在

谢谢，乔希

Answer 1

您在Level, and ?,之后插入了,，假设是这样的"INSERT INTO 'driverlevel' (Level) VALUES(?)，然后在(self.val1,)结尾插入逗号,，将其视为元组，因为您可以将数据作为元组插入到sqlite3中

也可以用这种方式插入数据

sql = "INSERT INTO driverlevel (Level) VALUES(?,)"
conn = sqlite3.connect("RMS.db")
c = conn.cursor()
c.execute("INSERT INTO driverlevel(level)VALUES(?)", (self.val1,))
conn.commit()
tkinter.messagebox.showinfo("Success", "Driver Level Added")

确保插入后关闭了数据库。在

完整代码

^{pr2}$