如何從sqlit3寫入Python中的.txt文件

Question

我對編程和python相對較新。 我正在建設這個應用程序的健身房輸入客戶的詳細信息使用tkinter，我得到它所有運行，但我需要一種方法來提取客戶電話號碼從sqlite3數據庫txt文件。

這裏是後端腳本

import sqlite3 

class database: 
    def __init__(self,db): 
     self.conn=sqlite3.connect(db) 
     self.cur=self.conn.cursor() 
     self.cur.execute("CREATE TABLE IF NOT EXISTS Customers (id INTEGER PRIMARY KEY, name text, Phone integer, gender text, DoB date)") 
     self.conn.commit() 

    def add(self,name,phone,gender,DoB): 
     self.cur.execute("INSERT INTO Customers VALUES (NULL,?,?,?,?)",(name,phone,gender,DoB)) 
     self.conn.commit() 

    def search(self,name="",phone="",DoB=""): 
     self.cur.execute("SELECT * FROM Customers WHERE name=? OR phone=? OR DoB=?",(name,phone,DoB)) 
     rows=self.cur.fetchall() 
     return rows 

    def view(self): 
     self.cur.execute("SELECT * FROM Customers") 
     rows=self.cur.fetchall() 
     return rows 

    def delete(self,id): 
     self.cur.execute("DELETE FROM Customers WHERE id=?",(id,)) 
     self.conn.commit() 

    def edit(self,id,name,phone,gender,DoB): 
     self.cur.execute("UPDATE Customers SET name=?,phone=?,gender=?,DoB=? WHERE id=?",(name,phone,gender,DoB,id)) 
     self.conn.commit() 

    def __del__(self): 
     self.conn.close() 

這裏前端腳本

from Tkinter import * 
from backWM import database 

database=database("customer.db") 
#window.geometry("%dx%d" % (500, 300)) 

"""-------------------FUNCTIONS--------------------""" 
def get_selected_row(event): 
    global selected_tuple 
    index=list1.curselection()[0] 
    selected_tuple=list1.get(index) 
    e2.delete(0,END) 
    e2.insert(END,selected_tuple[1]) 
    e3.delete(0,END) 
    e3.insert(END,selected_tuple[2]) 
    e4.delete(0,END) 
    e4.insert(END,selected_tuple[4]) 

def add_command(): 
    database.add(name_text.get(),phone_text.get(),gender_text.get(),dob_text.get()) 
    list1.delete(0,END) 
    list1.insert(END,(name_text.get(),phone_text.get(),gender_text.get(),dob_text.get())) 
    e2.delete(0,END) 
    e3.delete(0,END) 
    e4.delete(0,END) 

def search_command(): 
    list1.delete(0,END) 
    for row in database.search(name_text.get(),phone_text.get(),dob_text.get()): 
     list1.insert(END,row) 

def delete_command(): 
    database.delete(selected_tuple[0]) 
    list1.delete(END,selected_tuple[0]) 
    e2.delete(0,END) 
    e3.delete(0,END) 
    e4.delete(0,END) 

def view_command(): 
    list1.delete(0,END) 
    for row in database.view(): 
     list1.insert(END,row) 

def edit_command(): 
    database.edit(selected_tuple[0],name_text.get(),phone_text.get(),gender_text.get(),dob_text.get()) 
    e2.delete(0,END) 
    e3.delete(0,END) 
    e4.delete(0,END) 

def set_list(event): 
    """ 
    insert an edited line from the entry widget 
    back into the listbox 
    """ 
    try: 
     index = list1.curselection()[0] 
     # delete old listbox line 
     list1.delete(index) 
    except IndexError: 
     index = END 
    # insert edited item back into listbox1 at index 
    list1.insert(index, name_text.get(),phone_text.get(),gender_text.get(),dob_text.get()) 

window=Tk() 
window.wm_title("WhiteMountains Gym") 
"""-------------------LABELS--------------------""" 
l1=Label(window,text="CUSTOMER DETAILS") 
l1.grid(row=0,column=1, columnspan=5) 
l1.config(font=("Proggy", 30),width=20) 

l2=Label(window,text="Name") 
l2.grid(row=1,column=1) 

l3=Label(window,text="Phone Number") 
l3.grid(row=1,column=3) 

l4=Label(window,text="D.O.B") 
l4.grid(row=2,column=3) 

"""-------------------ENTRY----------------""" 
name_text=StringVar() 
e2=Entry(window,textvariable=name_text) 
e2.grid(row=1,column=2) 
e2.config(width=30) 
e2.bind('<<return>>', set_list) 

phone_text=StringVar() 
e3=Entry(window,textvariable=phone_text) 
e3.grid(row=1,column=4) 
e3.bind('<<return>>', set_list) 

gender_text=StringVar() 
gender_text.set('Gender') 
choices=['Gender','Male','Female'] 
option=OptionMenu(window,gender_text,*choices) 
option.grid(row=2,column=1,columnspan=2) 
option.config(width=15) 
option.bind('<<return>>', set_list) 

dob_text=StringVar() 
e4=Entry(window,textvariable=dob_text) 
e4.grid(row=2,column=4) 
e4.bind('<<return>>', set_list) 
"""----------------------BUTTONS----------------""" 
b1=Button(window,text="ADD",width=12,command=add_command) 
b1.grid(row=1,column=6) 

b2=Button(window,text="SEARCH",width=12,command=search_command) 
b2.grid(row=2,column=6) 

b3=Button(window,text="DELETE",width=12,command=delete_command) 
b3.grid(row=3,column=6) 

b4=Button(window,text="UPDATE",width=12,command=edit_command) 
b4.grid(row=4,column=6) 

b5=Button(window,text="VIEW ALL",width=12,command=view_command) 
b5.grid(row=5,column=6) 

b5=Button(window,text="CLOSE",width=12,command=window.destroy) 
b5.grid(row=6,column=6) 


"""----------------------LISTBOX----------------""" 
list1=Listbox(window,height=20,width=70) 
list1.grid(row=7,column=0,columnspan=4) 

s1=Scrollbar(window) 
s1.grid(row=3,column=4,rowspan=10) 

list1.configure(yscrollcommand=s1.set) 
s1.configure(command=list1.yview) 

list1.bind('<<ListboxSelect>>',get_selected_row) 




window.mainloop() 

那麼，如何讓進入手機輸入構件保存到一個txt文件中的每個新的電話號碼，所以我只能訪問電話號碼

Answer 1

你可以這樣做：

def write_to_text_file(self): 
    self.cur.execute("SELECT phone FROM Customers") 
    rows = self.cur.fetchall() 
    with open('phone_numbers','ab') as fou: 
     for row in rows: 
      fou.write(row[0]) 
    return fou 

而要獲取更新每次插入一條記錄時間只是做：

def add(self,name,phone,gender,DoB): 
    self.cur.execute("INSERT INTO Customers VALUES (NULL,?,?,?,?)",(name,phone,gender,DoB)) 
    self.conn.commit() 
    self.write_to_text_file(self)