按钮的padx不是故意的?

Question

我的项目是一个简单的计算器:

我有一个问题与padx或按钮的宽度button_subtract;

代码:

from tkinter import *
root = Tk()
root.title("Simple Calculator")
numEnter = Entry(root , width=58 ,borderwidth=5)
numEnter.grid(row=0 , column=0 , columnspan=4)

def button_click(num):
current = numEnter.get()
numEnter.delete(0 , END)
numEnter.insert(0 , str(current) + str(num))

def button_add_func():
first_num = numEnter.get()
global f_num
global math
math = 'addition'
f_num = int(first_num)
numEnter.delete(0 , END)

def button_subtract_func():
first_num = numEnter.get()
global f_num
global math
math = "subtraction"
f_num = int(first_num)
numEnter.delete(0 , END)

def button_multiply_func():
first_num = numEnter.get()
global f_num
global math
math = 'multiplication'
f_num = int(first_num)
numEnter.delete(0 , END)

def button_divide_func():
first_num = numEnter.get()
global f_num
global math
math = 'division'
f_num = int(first_num)
numEnter.delete(0 , END)

def button_equal_func():
s_num = numEnter.get()
numEnter.delete(0 , END)
if math == 'addition':
numEnter.insert(0 , int(s_num) + f_num)
elif math == 'subtraction':
numEnter.insert(0 , int(s_num) - f_num)
elif math == 'multiplication':
numEnter.insert(0 , int(s_num) * f_num)
elif math == 'division':
numEnter.insert(0 , int(s_num) / f_num)

def button_C():
numEnter.delete(0 , END)

button_1 = Button(root , text="1" , padx=40 , pady=20 , command=lambda: button_click(1))
button_2 = Button(root , text="2" , padx=40 , pady=20 , command=lambda: button_click(2))
button_3 = Button(root , text="3" , padx=40 , pady=20 , command=lambda: button_click(3))
button_4 = Button(root , text="4" , padx=40 , pady=20 , command=lambda: button_click(4))
button_5 = Button(root , text="5" , padx=40 , pady=20 , command=lambda: button_click(5))
button_6 = Button(root , text="6" , padx=40 , pady=20 , command=lambda: button_click(6))
button_7 = Button(root , text="7" , padx=40 , pady=20 , command=lambda: button_click(7))
button_8 = Button(root , text="8" , padx=40 , pady=20 , command=lambda: button_click(8))
button_9 = Button(root , text="9" , padx=40 , pady=20 , command=lambda: button_click(9))
button_0 = Button(root , text="0" , padx=40 , pady=20 , command=lambda: button_click(0))
button_add = Button(root , text="+" , padx=39 , pady=20 , command=button_add_func)
button_equal = Button(root , text="=" , padx=39 , pady=20 , command=button_equal_func)
button_clear = Button(root , text="Clear" , padx=20 , pady=148 , command=button_C)
button_subtract = Button(root , text='-' , padx=41 , pady=20 , command=button_subtract_func)
button_multiply = Button(root , text='×' , padx=39 , pady=20 , command=button_multiply_func)
button_divide = Button(root , text='÷' , padx=39 , pady=20 , command=button_divide_func)

button_9.grid(row=1 , column=0)
button_8.grid(row=1 , column=1)
button_7.grid(row=1 , column=2)
button_6.grid(row=2 , column=0)
button_5.grid(row=2 , column=1)
button_4.grid(row=2 , column=2)
button_1.grid(row=3 , column=0)
button_2.grid(row=3 , column=1)
button_3.grid(row=3 , column=2)
button_add.grid(row=4 , column=1)
button_equal.grid(row=5 , column=0)
button_clear.grid(row=1 , column=3, rowspan=5)
button_0.grid(row=4 , column=0)
button_subtract.grid(row=4 , column=2)
button_multiply.grid(row=5 , column=1)
button_divide.grid(row=5 , column=2)
root.mainloop()

，但结果是:点击我查看窗口

减法按钮没有修改，或者我的意思是不打算在正确的地方!!

请快速回答😅😅

Answer 1

我找到了我的问题的答案，这是在'-'标记旁边添加一个空格，按钮代码将是:

button_subtract = Button(root , text="- " , padx=39 , pady=20 , command=button_subtract_func)