Question

我是Python和stackoverFlow的新手。我正在尝试从输入的第一列CSV文件自动创建Checkbox小部件。如何让滚动条处于正确的位置。输入CSV文件之前的图像，右侧的滚动条

输入CSV文件后的下图，复选框小部件无法滚动

使用python 3.5的代码

import tkinter as tk
from tkinter import ttk
import start
from tkinter.filedialog import askopenfilename
import numpy as np
import pandas as pd

LARGE_FONT=("Verdana", 12)

class MainPage(tk.Frame):
"""docstring for MainPage"""
def __init__(self, parent,controller):
    tk.Frame.__init__(self,parent)
    self.controller = controller
    self.getColumn = []
    self.createWidgets()


def createWidgets(self):
    self.createPanel()

def createPanel(self):
    nb = ttk.Notebook(self)
    nb.grid(row=1,column=0,columnspan=50,rowspan=49,sticky="NEWS")
    self.createMainPageTab(nb)
    self.createClassifyTab(nb)


def createMainPageTab(self,nb):
    self.featureSelection = tk.IntVar()

    page1 = ttk.Frame(nb)
    nb.add(page1,text="Preprocessing")

    selectFileFrame = tk.LabelFrame(page1,text = "Select File")
    selectFileFrame.grid(row=0,column=0,sticky="W",padx=5,pady=5,ipady=5,columnspan=10)

    selectRoleFrame = tk.LabelFrame(page1,text = "select Role")
    selectRoleFrame.grid(row=1,column=0,sticky="W",padx=5,pady=5,ipady=5,columnspan=1,rowspan=1)

    text = tk.Label(selectFileFrame,text="Select The File")
    text.grid(row=0,column=0, sticky="E")

    textSelectFile = tk.Text(selectFileFrame,width = 20, height = 1)
    textSelectFile.grid(row=0,column=1,sticky="WE",pady=3,padx=5)

    buttonSelectFile = tk.Button(selectFileFrame,text="browse...",command=lambda : self.load_file(textSelectFile,frameCheckBox))
    buttonSelectFile.grid(row=0,column=2,sticky="w")

    checkButtonFeatureSelection = tk.Checkbutton(selectFileFrame, text= "Feature Selection",variable = self.featureSelection)
    checkButtonFeatureSelection.grid(row=1,column=0,sticky="w") 

    buttonCek = tk.Button(selectFileFrame, text='Show', command= lambda : self.var_states())
    buttonCek.grid(row=2,column=0,sticky="W")


    #create canvas for scroll bar 
    canvasScroll = tk.Canvas(selectRoleFrame,bg="Yellow")
    canvasScroll.grid(row=0,column=0)

    vBar = tk.Scrollbar(selectRoleFrame,orient="vertical",command=canvasScroll.yview)
    vBar.grid(row=0,column=1, sticky="ns")
    canvasScroll.configure(yscrollcommand=vBar.set)

    frameCheckBox = tk.Frame(canvasScroll,bg="blue",bd=2,relief=tk.GROOVE)
    canvasScroll.create_window((0,0), window=frameCheckBox,anchor="nw")

    frameCheckBox.bind("<Configure>",self.resize(canvasScroll))


def resize(self,canvasScroll): 
    canvasScroll.configure(scrollregion=canvasScroll.bbox("all"),width=235,height=90)   


def readingCsv(self,fname):
    readCsv = pd.read_csv(fname)
    return readCsv

#event input csv file
def load_file(self,textSelectFile,frameCheckBox):
    fname = askopenfilename(filetypes=(("*.csv","Template files"),
                                       ("HTML files", "*.html;*.htm"),
                                       ("All files", "*.*") ))
    print(fname)
    mlabel = tk.Label(self,text="%s" % fname)
    mlabel.grid(row=0,column=3)
    # getText=self.textSelectFile.get()
    textSelectFile.configure(state=tk.NORMAL)
    textSelectFile.delete(1.0,tk.END)
    textSelectFile.insert(tk.END,fname)
    textSelectFile.configure(state=tk.DISABLED)
    read = self.readingCsv(fname)
    self.getColumn = self.getColumnFromCsv(read)
 #create checkbox
    if self.getColumn:
        for Column in self.getColumn:
            v = tk.StringVar()
            l = tk.Checkbutton(frameCheckBox,text=Column,variable=v)
            l.grid(sticky="w")


def getColumnFromCsv(self,readCsv):
    numeric_variables = list(readCsv.dtypes[readCsv.dtypes != "object"].index)
    return numeric_variables

def var_states(self):
    alabel = tk.Label(self,text="%s" % self.featureSelection.get())
    alabel.grid(row=3,column=0)
    print("tes : %d" %(self.featureSelection.get()))    

def feature_selection(self,chcekFeatureSelection):
    if self.featureSelection.get() == 1:
        pass



def createClassifyTab(self,nb):
    page2 = ttk.Frame(nb)
    nb.add(page2,text="Classify")

Answer 1

你有

frameCheckBox.bind("<Configure>",self.resize(canvasScroll))

表示

result = self.resize(canvasScroll)
frameCheckBox.bind("<Configure>", result)

所以你没有分配功能，但你执行了resize并分配了结果。

但是resize会返回None，所以最后你得到了

frameCheckBox.bind("<Configure>", None)

bind()（类似于command=）期望回调 - 它表示没有()的函数名和参数 - 就像这样

frameCheckBox.bind("<Configure>", self.resize)

因为你想发送额外的参数（并且event默认发送bind），你必须使用lambda

frameCheckBox.bind("<Configure>", lambda event: self.resize(canvasScroll))

创建动态小部件python tkinter并在画布中添加滚动条

1 个答案: