Python 将tkinter上的条目保存到sqlite3

提前感谢您的帮助

我一直在网上寻找解决方案，一直在努力寻找。我试图将tkinter上的输入文本框中的一些数据保存到SQLite3中的表中，但无论我做什么尝试，每次都会收到相同的错误。代码如下

请注意，我几天前才开始从youtube视频学习编码。道歉，如果这真的很简单

**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

不知道如何克服这一点

---

谢谢，Josh

您在

级别之后插入了
，
，以及？，

，假设是这个

“插入到'driverlevel'（级别）值（？）

，然后在

（self.val1，）的末尾插入逗号
，
，将其视为元组，因为您可以将数据作为元组插入
sqlite3

也可以通过这种方式插入数据

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

完整代码

from tkinter import *
import sqlite3
import tkinter.messagebox

# connect to database
conn = sqlite3.connect("RMS.db")
c = conn.cursor()
c.execute("CREATE TABLE IF NOT EXISTS driverlevel(level text, age text)")
conn.commit()
conn.close()



# 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(?,)"
          #  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")

            conn = sqlite3.connect("RMS.db")
            c = conn.cursor()
            sql = "INSERT INTO 'driverlevel' (Level) VALUES(?)"
            c.execute(sql, (self.val1,))
            conn.commit()
            conn.close()

            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()

@JJPS如果这解决了问题，请确保勾号符号作为未来编码人员的参考。