如何從 CSV 文件中僅讀取 treeview 中的新值？

Question

我在這里有這段代碼：

def insert_Data_Custom(self):
    with open('data.csv', 'a') as fd:
        fd.write(self.customer_entry.get() + "," +
        self.product_entry.get() + "," +
        self.weight_entry.get() + "," +
        self.in_out_entry.get() + "," +
        self.quantity_entry.get() + "," +
        self.batch_entry.get() + "," +
        self.best_before_entry.get() + '\n')
        fd.close()

    with open('data.csv') as f:
        reader = csv.DictReader(f, delimiter=',')
        for row in reader:
            customer = row['Customer']
            product = row['Product']
            weight = row['Weight']
            inner_outer = row['Inner/Outer']
            quantity = row['Quantity']
            batch = row['Batch']
            bbe = row['Best Before']
            Progress = row['Progress']
            self.progress_view.insert("", 0, values=(customer,product,weight,inner_outer,quantity,batch,bbe,Progress))


    self.customer_entry.delete(0, 'end')
    self.product_entry.delete(0, 'end')
    self.weight_entry.delete(0, 'end')
    self.in_out_entry.delete(0, 'end')
    self.quantity_entry.delete(0, 'end')
    self.batch_entry.delete(0, 'end')
    self.best_before_entry.delete(0, 'end')

頂部獲取所有值並附加到 csv 文件中。 除此之外，中間代碼會將值從 csv 值添加到 treeview 中。

My problem is, when I click a button to activate this function, it inserts data into CSV and Treeview reads the CSV values and shows the values. 但是如果我插入另一個值，treeview 將復制以前的值並添加新記錄。

如何將 treeview 僅插入 append 新記錄？

Answer 1

My problem is, when I click a button to activate this function, it inserts data into CSV and Treeview reads the CSV values and shows the values. 但是如果我插入另一個值，treeview 將復制以前的值並添加新記錄。

您必須檢查您的treeview是否有任何child並在開始插入之前刪除這些children 。

if self.progress_view.winfo_children():
    for widget in self.progress_view.winfo_children():
        widget.destroy()