python，tkinter，創建條形圖時的問題

Question

當我嘗試使用 python 和 tkinter 創建條形圖時收到以下錯誤消息：

AttributeError: 'FigureCanvasTkAgg' object has no attribute 'show'

這是我的代碼

import matplotlib,numpy,sys
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
from tkinter import *
root=Tk()
f=Figure(figsize=(5,4),dpi=100)
ax=f.add_subplot(111)
data=(20,35,30,35,27)
ind=numpy.arange(5)  # the x locations for the groups
width=.5
rects1=ax.bar(ind,data,width)
canvas=FigureCanvasTkAgg(f,master=root)
canvas.show()
canvas.get_tk_widget().pack(side=TOP,fill=BOTH,expand=1)
root.mainloop()

Answer 1

只需刪除導致問題的行：

import matplotlib,numpy,sys
matplotlib.use('TkAgg')

from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
from tkinter import Tk,TOP,BOTH

root=Tk()
f=Figure(figsize=(5,4),dpi=100)
ax=f.add_subplot(111)
data=(20,35,30,35,27)
ind=numpy.arange(5)  # the x locations for the groups
width=.5
rects1=ax.bar(ind,data,width)
canvas=FigureCanvasTkAgg(f,master=root)
canvas.get_tk_widget().pack(side=TOP,fill=BOTH,expand=1)

root.mainloop()

或者將.show()替換為.draw()作為評論中提到的@acw1668。