我正在使用tkinter创建一个选项菜单，在这里选择一个选项将调用一个特定于每个选项的函数，但是，我无法弄清楚具体如何做到这一点。
这是当前正在使用的代码。

import pandas as pd
import os 
import matplotlib.pyplot as plt 

#below code imports file needed at the moment
import tkinter as tk
from tkinter import *
from tkinter import filedialog
import pandas as pd
import os 
import matplotlib.pyplot as plt 

root = tk.Tk()
root.withdraw()

file_path = filedialog.askopenfilename() #will open file from any location, does not need to be in the same place as the code script 
df = pd.read_csv(file_path) 
df.rename(columns={'Unnamed: 0':'Type'}, inplace=True) #renames the first unnamed column to type (drug available (DA) or not available (NA)
df.dropna(how = 'all', axis = 1, inplace = True) #drops the empty column present in each dataset, only drops it if the whole column is empty 

##plotting functions for both active and inactive pokes
def ActivePokes(df): 
    plt.rcParams["figure.figsize"] = (12,7.5)
    df.plot()
    plt.xticks(range(0,len(df.Type)), df.Type)
    plt.ylabel("Number of Active Pokes")
    plt.xlabel("Sessions")
    plt.title("Number of Active Pokes vs Drug Availability")
    plt.show()
    
    
def InactivePokes(df): 
    plt.rcParams["figure.figsize"] = (12,7.5)
    df.plot()
    plt.xticks(range(0,len(df.Type)), df.Type)
    plt.ylabel("Number of Inactive Pokes")
    plt.xlabel("Sessions")
    plt.title("Number of Inactive Pokes vs Drug Availability")
    plt.show()
    
def show(df): 
    if variable == options[1]:
        button[command] = ActivePokes(df)
    elif variable == options[2]: 
        button[command] = InactivePokes(df)
    else: 
        print("Error!")

options = [ "Choose Option",
           "1. Active pokes, Drug Available and No Drug Available sessions", 
           "2. Inactive pokes, Drug Available and No Drug Available sessions"]
button = Tk()
button.title("Dialog Window")

button.geometry('500x90')
variable = StringVar(button)
variable.set(options[0]) #default value, might change and edit as time passes 
option = OptionMenu(button, variable, *options, command = show)
option.pack()
button.mainloop()

我知道show（）函数是问题所在，但我不完全确定如何纠正它。