Python 我什么时候应该使用帆布和标签

接受一个类，它告诉我应该使用Canvas对象来显示文本.为什么这比使用标签更好呢？只显示文本框似乎是一种更复杂的方式.

在下面的示例中，请参见相关行的"#Create canvas"和"#Create labels"注释.

from tkinter import *

# Set globals, constants -------------------------------------------------------------
BG_COLOR = "#375362"
FG_COLOR = "white"
FONT = ("Arial", 20, "italic")
PADDING = 20
QBOX_HEIGHT = 250
QBOX_WIDTH = 300


# Create UI for Quizzler game --------------------------------------------------------
class QuizUI:
    def __init__(self):
        # Create window
        self.window = Tk()
        self.window.title("Quizzler")
        self.window.config(padx=PADDING, pady=PADDING, bg=BG_COLOR)

        # Create canvas
        self.qbox_canvas = Canvas(width=QBOX_WIDTH, height=QBOX_HEIGHT)
        self.qbox_canvas.grid(row=1, column=0, columnspan=2, padx=PADDING, pady=PADDING)

        # Create labels
        self.score_label = Label(text="Score: 0", bg=BG_COLOR, fg=FG_COLOR, font=FONT)
        self.score_label.grid(row=0, column=1, padx=PADDING, pady=PADDING)
        self.question_label = self.qbox_canvas.create_text(QBOX_WIDTH / 2, QBOX_HEIGHT / 2, text="PLACEHOLDER", font=FONT)

        # Run window loop
        self.window.mainloop()

Expected:%的人只使用标签.画布似乎没有必要. Actual:讲师推荐的画布.