如何在我的 tkinter 窗口中添加滚动条？ [复制]

Question

我想将创建 csv 文件的 Yahoo 收入日历页面 scraper 转换为 GUI，但我注意到如果当天报告的公司太多，tkinter 窗口就这么大显示设定的金额。我想知道是否有办法在我的窗口中实现滚动条。感谢任何帮助！

from tkinter import *
from tkinter.tix import *
import csv
from datetime import date
import yahooFinanceToCSV

root = Tk()

# open file
with open(r'earnings_{}.csv'.format(date.today()), newline = "") as file:
   reader = csv.reader(file)

   # r and c tell us where to grid the labels
   r = 0
   for col in reader:
      c = 0
      for row in col:
         # i've added some styling
         label = tkinter.Label(root, width = 35, height = 2, \
                               text = row, relief = tkinter.RIDGE)
         label.grid(row = r, column = c)
         c += 1
      r += 1

root.mainloop()

我的雅虎收入scraper代码

import pandas as pd
from datetime import date

# Forcing Pandas to display max rows and columns.
pd.option_context('display.max_rows', None, 'display.max_columns', None)
# Reading the earnings calendar table on yahoo finance website.
# earnings = pd.read_html('https://finance.yahoo.com/calendar/earnings')[0]
earnings = pd.read_html("https://finance.yahoo.com/calendar/earnings?from=2020-01-19&to=2020-01-25&day=2020-01-21")[0]
# Writing to a CSV file.
earnings.to_csv(r'earnings_{}.csv'.format(date.today()), index=None)

注意：由于有 40 多家公司报告，HTML 被强制发布到 2020 年 1 月 21 日。通常我每天运行代码以获得当天的收入，但 2020 年 1 月 21 日有助于重现需要解决的问题。

Answer 1

由于Tk 和Frame 不支持Scrollbar，您需要使用Canvas、Scrollbar 和Frame 小部件模拟ScrolledFrame：

def ScrolledFrame(parent):
  def on_resize(event):
    bbox = canvas.bbox('all')
    canvas.config(width=bbox[2], scrollregion=bbox)

  def on_mouse_wheel(event):
    # better checking whether event happens inside frame
    canvas.yview_scroll(event.delta//-30, 'units')

  # note: Canvas is the outer container
  canvas = tkinter.Canvas(parent)
  # *** modify the below line to suit your layout manager
  canvas.pack(side=tkinter.LEFT, fill=tkinter.BOTH, expand=1)

  sb = tkinter.Scrollbar(parent, orient=tkinter.VERTICAL, command=canvas.yview)
  # *** modify the below line to use same layout manager as canavas
  sb.pack(side=tkinter.RIGHT, fill=tkinter.Y)

  canvas.config(yscrollcommand=sb.set)

  frame = tkinter.Frame(canvas)
  canvas.create_window(0, 0, window=frame, anchor='nw')
  frame.bind('<Configure>', on_resize)
  # use bind_all() to make sure mouse wheel events can be triggered
  # even the canvas is filled with labels on top 
  canvas.bind_all('<MouseWheel>', on_mouse_wheel)

  return frame

然后创建ScrolledFrame:

frame = ScrolledFrame(root)
# *** don't call any layout manager function, e.g. frame.pack() or frame.grid()

并在ScrolledFrame内创建所有标签：

label = tkinter.Label(frame, ...)
label.grid(...)

您可以根据需要修改ScrolledFrame()函数。

Answer 2

有一种方法可以在你的窗口上创建滚动条：

from Tkinter import * 
root = Tk() 
scrollbar = Scrollbar(root) 
scrollbar.pack( side = RIGHT, fill = Y )