无法显示从sqlite到tkinter条目小部件的查询数据

如何解决无法显示从sqlite到tkinter条目小部件的查询数据

所以我有这个问题。这个小项目背后的想法是，我想从SQLite数据库中添加几列，并根据用户在主GUI中单击哪些复选框（这些复选框是月份和年份），将这些结果显示在输入框中，我可以使输入框显示某些内容，但这不是我想要的，而是在框中显示以下消息：。我要查看的是所选期间的总金额。

import sys
import sqlite3
from tkinter import *
from tkinter import ttk

# Creates an entry widget
incomeentry = Entry(root) #
incomeentry.place(relx=0.89,rely =0.01,relheight=0.035,relwidth=0.1,bordermode='ignore')

#Sets check boxes either to int or to str
state5 = IntVar()
state6 = IntVar()
state7 = StringVar()
state8 = StringVar()

# Creates 4 check buttons (2 for years and 2 for months)
TCheckbutton1 = Checkbutton(root,variable=state5,onvalue=2019,offvalue=0)
TCheckbutton1.place(relx=0.62,rely=0.01,relwidth=0.03,relheight=0.0,height=21)
TCheckbutton1.configure(text='''2019''')


TCheckbutton2 = Checkbutton(root,variable=state6,onvalue=2020,offvalue=0)
TCheckbutton2.place(relx=0.62,rely=0.03,height=21)
TCheckbutton2.configure(text='''2020''')


TCheckbutton3 = Checkbutton(root,variable=state7,onvalue='January',offvalue=0)
TCheckbutton3.place(relx=0.62,rely=0.05,height=21)
TCheckbutton3.configure(text='''January''')


TCheckbutton4 = Checkbutton(root,variable=state8,onvalue='February',offvalue=0)
TCheckbutton4.place(relx=0.62,rely=0.07,height=21)
TCheckbutton4.configure(text='''February'')



#Tries to connect to the database,queries data from the SQLite and inserts it into Tkinter entry box

def Choose():
    conn = sqlite3.connect("taxes.db")
    c = conn.cursor()
    connect = c.execute("SELECT SUM(moneyback + woocomerce + deliveries) FROM income WHERE month = ? and year = ? ",(state7.get(),state6.get()))
    incomeentry.insert(0,connect)

    conn.close()


# Creates a button that executes the 'Choose' function

TButton1 = Button(root,command=Choose) 
TButton1.place(relx=0.54,rely=0.007,relwidth=0.075,relheight=0.00,height=50)
TButton1.configure(text='''Choose''')

因此，总的来说，我希望根据用户单击的年份和月份从3列中得出我的总金额，以显示在空白输入框中。

解决方法

您的代码...

connect = c.execute("SELECT SUM(moneyback + woocomerce + deliveries) FROM income WHERE month = ? and year = ? ",(state7.get(),state6.get()))

...将执行在数据库中搜索良好结果的操作，如果要将结果保存为变量，则必须使用fetchall()或fetchone()或{{1} }方法。

类似，

fetchmany()

或

results = connect.fetchall() #to fetch all the data

请注意，results = connect.fetchone() #to fetch one of the data 将是获取的数据元组的列表。

现在您可以说出来

result

Here is some documentation on sqlite and python

Some documentation on checkbuttons

如果有任何疑问或错误，请告诉我

欢呼