Label 文本标签中没有显示文本是什么原因？

有2个框架One_line，Two_line第一个有一个文本标签Day，其参数由类对象确定call_Text，第二个有一个文本标签Month，其参数在Text调用类对象时在类内部确定call_Text，但两者都不是第一种也不在第二种情况下显示文本，这很奇怪，其他一切都是彩色文本标签背景，大小，显示，我做错了什么？

from tkinter import *
import tkinter as tk


root = Tk()
root.title('Python')
root.geometry('605x80')
root.resizable(width = False, height = False)


class Frames():
    List_frames = []
    def __init__(self, background_line, width_line, height_line):
        self.background_line = background_line
        self.width_line = width_line
        self.height_line = height_line 
        self.List_name_frames = ['One_line', 'Two_line']
        
        for name_line in self.List_name_frames:
            name_line = Frame(root, background = self.background_line, \
                              width = self.width_line, height = self.height_line)
            self.List_frames.append(name_line)
        
        for line in self.List_frames:
            line.pack(anchor = W)
            line.pack_propagate(False)
  
    
class Text():
    def __init__(self, text, font_text, bg_text, fg_text, width_texts, height_texts):
        self.Pixel_Virtual = tk.PhotoImage(width = 1)
        self.text = text
        self.bg_text = bg_text
        self.font_text = font_text
        self.fg_text = fg_text
        self.width_text = width_texts
        self.height_texts = height_texts
        
        Day = Label(Frames.List_frames[0], image = self.Pixel_Virtual, 
                    text = self.text, bg = self.bg_text, font = self.font_text,
                    fg = self.fg_text, width = self.width_text,
                    height = self.height_texts)
        Day.pack(side = LEFT) 
        
        Month = Label(Frames.List_frames[1], image = self.Pixel_Virtual, 
                    text = "Месяц", bg = 'aqua', font = 'Arial 14',
                    fg = 'black', width = 140, height = 40)
        Month.pack(side = LEFT)


call_Frames = Frames('olivedrab', 605, 40)

call_Text = Text("День", 'Arial 14', 'green', 'black', 140, 40) 


root.mainloop()