在使用python pandas Series plot畫折線圖時，不知道該如何顯示x軸的值。
代碼：

import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
from matplotlib.font_manager import *
import tkinter as tk
from tkinter import ttk
import generate_situation01 as gs1
import get_phone_detail as gpd
import pandas as pd


class Test():
    def __init__(self):
        self.root = tk.Tk()
        self.root.geometry("800x600")
        self.data = gs1.main(1000)
        self.lf = ttk.Labelframe(self.root, text='數(shù)據(jù)規(guī)律性')
        self.lf.grid(row=1, column=1, sticky='nsew', padx=3, pady=3)
        self.fig = Figure(figsize=(6, 5), dpi=100)
        self.ax = self.fig.add_subplot(111)
        self.show_btn = tk.Button(self.root, text='展示數(shù)據(jù)1', command=self.weekday_cost_show)
        self.show_btn2 = tk.Button(self.root, text='展示數(shù)據(jù)2', command=self.phone_place_show)
        self.show_btn3 = tk.Button(self.root, text='展示數(shù)據(jù)3', command=self.email_show)
        self.show_btn.grid(row=0, column=0, sticky='w')
        self.show_btn2.grid(row=0, column=1, sticky='w')
        self.show_btn3.grid(row=0, column=2, sticky='w')
        self.root.mainloop()

    def weekday_cost_show(self):
        self.ax.clear()
        self.weekdays = self.data[['weekday']]
        s = self.weekdays['weekday'].value_counts(sort=False)
        s = s.reindex(['Mon', 'Tue', 'Wed', 'Thur', 'Fri', 'Sat', 'Sun'])
        s.plot(kind='line', ax=self.ax)

        canvas = FigureCanvasTkAgg(self.fig, master=self.lf)
        canvas.draw()
        canvas.get_tk_widget().grid(row=0, column=0)

數(shù)據(jù)是我寫的另外一個函數(shù)所產(chǎn)生的，若是大佬幫忙驗證可替換掉。

折線圖如圖：

想請問我的index的值：['Mon', 'Tue', 'Wed', 'Thur', 'Fri', 'Sat', 'Sun']怎么才能顯示在x軸上呢？

使用大佬回答的ax.set_xticklabels只能從周二開始？