如何更快地将带有 Pandas 的值从 excel 导入 tkinter？

Question

guys! How are you? I have this code below and I'm having this trouble with the insertData function. This function is used to enter values from an excel spreadsheet into the tkinter treeview using Pandas. It's almost all right, but it's too slow and I don't know how to fix it. If anyone could help me, I'd be very happy. Thanks in advance!

from tkinter import *
import ttk
import openpyxl
import pandas as pd

nuScreen = Tk()
nuScreen.title("ContrasinSystem - Usuário Comum")
nuScreen.iconbitmap("logocontransin.ico")

book = openpyxl.load_workbook('Registros.xlsx')
sheet = book.sheetnames
sh = book.active.cell

#Contador de Linhas:
wb2 = openpyxl.load_workbook('Registros.xlsx')
sheet2 = wb2.worksheets[0]

rowCount = sheet2.max_row

v = []

#Design:


class main():
    def __init__(self,tk):
        for x in range (0,len(sheet)):
            v.append(sheet[int(x)])


        self.wb2 = openpyxl.load_workbook('Registros.xlsx')
        self.sheet2 = self.wb2.worksheets[0]

        self.row_count = self.sheet2.max_row
        self.column_count = self.sheet2.max_column


        self.nuFrame = Frame(nuScreen, width = 1500, height = 450)

        self.nuFrame.pack()

        self.img = PhotoImage(file="logocontransin.png")
        self.w = Label(self.nuFrame, image = self.img)
        self.w.img = self.img
        self.w.place(x=65,y=150)


        self.srchlbl = ttk.Label(self.nuFrame, text = "Buscar:")
        self.srchlbl.place(x=25,y=75)
        self.srchetr = ttk.Entry(self.nuFrame, width = 30)
        self.srchetr.place(x=75,y=75)

        self.treeview = ttk.Treeview(self.nuFrame)
        self.treeview.place(x=300,y=75, width = 1100)

        dataVector = []      
        def columnsName():
            def Header():
                self.columnVector = []
                self.dataVector = []
                teste = []
                self.treeview.column("#0", width = 20)          
                self.columnHeader = pd.read_excel(r'Registros.xlsx', str(self.cmb.get()), header_only = True, nrows=0).columns
                for a in self.columnHeader:
                    self.columnVector.append(a)
                self.treeview.configure(columns = self.columnVector)
                for b in self.columnHeader:
                    self.treeview.heading(str(b), text = str(b))
            def insertData():
                for m in range(rowCount):
                    self.dataValues = pd.read_excel(r'Registros.xlsx',str(self.cmb.get()), skip_blank_lines=True, skiprows=0)
                for l in self.dataValues:
                    dataVector.append(l)
                self.treeview.insert("", "end",values = dataVector)
                print(self.dataValues)

            Header()
            insertData()


        self.cmbLbl = ttk.Label(self.nuFrame, text = "Assunto:")
        self.cmbLbl.place(x=1200, y=325)
        self.cmb = ttk.Combobox(self.nuFrame, values = v)
        self.cmb.place(x=1250,y=325)

        self.btncmb = ttk.Button(self.nuFrame, text = "Buscar", command = columnsName)
        self.btncmb.place(x=1320,y=375)

nuScreen.geometry("1500x450")
main(nuScreen)
nuScreen.mainloop()

Answer 1

How many times do you want to open a excel file for reading?

def insertData():
  for m in range(rowCount):
    self.dataValues = pd.read_excel(r'Registros.xlsx',str(self.cmb.get()), 
    skip_blank_lines=True, skiprows=0)
  for l in self.dataValues:
    dataVector.append(l)
    self.treeview.insert("", "end",values = dataVector)
    print(self.dataValues)

Should you instead omit the first loop?

def insertData():
  self.dataValues = pd.read_excel(r'Registros.xlsx',str(self.cmb.get()), 
  skip_blank_lines=True, skiprows=0)
  for l in self.dataValues:
    self.treeview.insert("", "end",values = l)
    print(self.dataValues)