我一直在尝试使用tkinter模块在python中创建一个简单的计算器。
import tkinter as tk
class Application(tk.Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.pack()
self.create_widgets()
self.a = ''
self.math1 = 0
self.math2 = 0
def create_widgets(self):
self.quit_button = tk.Button(self, text='Q', fg='red', command=self.master.destroy)
self.quit_button.pack(side='left')
self.c_button = tk.Button(self)
self.c_button['text'] = 'C'
self.c_button.command = self.clear_all
self.c_button.pack(side='left')
self.one_button = tk.Button(self)
self.one_button['text'] = 1
self.one_button['command'] = self.add_1_to_str
self.one_button.pack(side='left')
self.two_button = tk.Button(self)
self.two_button['text'] = 2
self.two_button['command'] = self.add_2_to_str
self.two_button.pack(side='left')
self.three_button = tk.Button(self)
self.three_button['text'] = 3
self.three_button['command'] = self.add_3_to_str
self.three_button.pack(side='left')
self.four_button = tk.Button(self)
self.four_button['text'] = 4
self.four_button['command'] = self.add_4_to_str
self.four_button.pack(side='left')
self.five_button = tk.Button(self)
self.five_button['text'] = 5
self.five_button['command'] = self.add_5_to_str
self.five_button.pack(side='left')
self.six_button = tk.Button(self)
self.six_button['text'] = 6
self.six_button['command'] = self.add_6_to_str
self.six_button.pack(side='left')
self.seven_button = tk.Button(self)
self.seven_button['text'] = 7
self.seven_button['command'] = self.add_7_to_str
self.seven_button.pack(side='left')
self.eight_button = tk.Button(self)
self.eight_button['text'] = 8
self.eight_button['command'] = self.add_8_to_str
self.eight_button.pack(side='left')
self.nine_button = tk.Button(self)
self.nine_button['text'] = 9
self.nine_button['command'] = self.add_9_to_str
self.nine_button.pack(side='left')
self.zero_button = tk.Button(self)
self.zero_button['text'] = 0
self.zero_button['command'] = self.add_0_to_str
self.zero_button.pack(side='left')
self.equal_button = tk.Button(self)
self.equal_button['text'] = '='
self.equal_button['command'] = self.equal
self.equal_button.pack(side='left')
self.plus_button = tk.Button(self)
self.plus_button['text'] = '+'
self.plus_button['command'] = self.plus
self.plus_button.pack(side='left')
self.subtract_button = tk.Button(self)
self.subtract_button['text'] = '-'
self.subtract_button['command'] = self.subtract
self.subtract_button.pack(side='left')
self.multiply_button = tk.Button(self)
self.multiply_button['text'] = 'X'
self.multiply_button['command'] = self.multiply
self.multiply_button.pack(side='left')
self.divide_button = tk.Button(self)
self.divide_button['text'] = '/'
self.divide_button['command'] = self.multiply
self.divide_button.pack(side='left')
def plus(self):
self.operation = '+'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def subtract(self):
self.operation = '-'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def multiply(self):
self.operation = '*'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def divide(self):
self.operation = '/'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def equal(self):
self.math2 = self.a
self.math1 = int(self.math1)
self.math2 = int(self.math2)
if self.operation == '+':
self.total = self.math1 + self.math2
elif self.operation == '-':
self.total = self.math1 - self.math2
elif self.operation == '*':
self.total = self.math1 * self.math2
elif self.operation == '/':
self.total = self.math1 / self.math2
self.math1 = str(self.math1)
self.math2 = str(self.math2)
self.total = str(self.total)
print(self.math1 + self.operation + self.math2 + '=' + self.total)
def add_1_to_str(self):
self.a = self.a + '1'
def add_2_to_str(self):
self.a = self.a + '2'
def add_3_to_str(self):
self.a = self.a + '3'
def add_4_to_str(self):
self.a = self.a + '4'
def add_5_to_str(self):
self.a = self.a + '5'
def add_6_to_str(self):
self.a = self.a + '6'
def add_7_to_str(self):
self.a = self.a + '7'
def add_8_to_str(self):
self.a = self.a + '8'
def add_9_to_str(self):
self.a = self.a + '9'
def add_0_to_str(self):
self.a = self.a + '0'
def clear_all(self):
self.a = '0'
print(self.a)
root = tk.Tk()
app = Application(master=root)
app.mainloop()
它工作得很好，但是我想知道如何使它看起来像这样：
1 2 3 +
4 5 6 -
7 8 9 *
|C| 0 /
|||Q||| (|||Q||| means that the Q button will be that large, across the bottom)
代替此：
Q C 1 2 3 4 5 6 7 8 9 0 = + - * /
稍后我将在代码中添加小数，因此我还需要在.右侧的一个C按钮。
我真的不知道如何执行此操作，我尝试过的唯一想法是self.button.pack(side='top_left')，但我收到一条错误消息，说它只能位于顶部，底部，左侧或右侧。
答案 0 :(得分：0)
尝试一下：
import tkinter as tk
class Application(tk.Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.pack()
self.create_widgets()
self.a = ''
self.math1 = 0
self.math2 = 0
def create_widgets(self):
self.quit_button = tk.Button(self, text='Q', fg='red', command=self.master.destroy)
self.quit_button.grid(row=4, column=0, columnspan=4, sticky="we")
self.c_button = tk.Button(self)
self.c_button['text'] = 'C'
self.c_button.command = self.clear_all
self.c_button.grid(row=3, column=0)
self.one_button = tk.Button(self)
self.one_button['text'] = 1
self.one_button['command'] = self.add_1_to_str
self.one_button.grid(row=0, column=0)
self.two_button = tk.Button(self)
self.two_button['text'] = 2
self.two_button['command'] = self.add_2_to_str
self.two_button.grid(row=0, column=1)
self.three_button = tk.Button(self)
self.three_button['text'] = 3
self.three_button['command'] = self.add_3_to_str
self.three_button.grid(row=0, column=2)
self.four_button = tk.Button(self)
self.four_button['text'] = 4
self.four_button['command'] = self.add_4_to_str
self.four_button.grid(row=1, column=0)
self.five_button = tk.Button(self)
self.five_button['text'] = 5
self.five_button['command'] = self.add_5_to_str
self.five_button.grid(row=1, column=1)
self.six_button = tk.Button(self)
self.six_button['text'] = 6
self.six_button['command'] = self.add_6_to_str
self.six_button.grid(row=1, column=2)
self.seven_button = tk.Button(self)
self.seven_button['text'] = 7
self.seven_button['command'] = self.add_7_to_str
self.seven_button.grid(row=2, column=0)
self.eight_button = tk.Button(self)
self.eight_button['text'] = 8
self.eight_button['command'] = self.add_8_to_str
self.eight_button.grid(row=2, column=1)
self.nine_button = tk.Button(self)
self.nine_button['text'] = 9
self.nine_button['command'] = self.add_9_to_str
self.nine_button.grid(row=2, column=2)
self.zero_button = tk.Button(self)
self.zero_button['text'] = 0
self.zero_button['command'] = self.add_0_to_str
self.zero_button.grid(row=3, column=2)
self.equal_button = tk.Button(self)
self.equal_button['text'] = '='
self.equal_button['command'] = self.equal
self.equal_button.grid(row=3, column=1)
self.plus_button = tk.Button(self)
self.plus_button['text'] = '+'
self.plus_button['command'] = self.plus
self.plus_button.grid(row=0, column=3)
self.subtract_button = tk.Button(self)
self.subtract_button['text'] = '-'
self.subtract_button['command'] = self.subtract
self.subtract_button.grid(row=1, column=3)
self.multiply_button = tk.Button(self)
self.multiply_button['text'] = 'X'
self.multiply_button['command'] = self.multiply
self.multiply_button.grid(row=2, column=3)
self.divide_button = tk.Button(self)
self.divide_button['text'] = '/'
self.divide_button['command'] = self.multiply
self.divide_button.grid(row=3, column=3)
def plus(self):
self.operation = '+'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def subtract(self):
self.operation = '-'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def multiply(self):
self.operation = '*'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def divide(self):
self.operation = '/'
self.a = int(self.a)
self.math1 = self.a
self.a = str(self.a)
self.a = ''
def equal(self):
self.math2 = self.a
self.math1 = int(self.math1)
self.math2 = int(self.math2)
if self.operation == '+':
self.total = self.math1 + self.math2
elif self.operation == '-':
self.total = self.math1 - self.math2
elif self.operation == '*':
self.total = self.math1 * self.math2
elif self.operation == '/':
self.total = self.math1 / self.math2
self.math1 = str(self.math1)
self.math2 = str(self.math2)
self.total = str(self.total)
print(self.math1 + self.operation + self.math2 + '=' + self.total)
def add_1_to_str(self):
self.a = self.a + '1'
def add_2_to_str(self):
self.a = self.a + '2'
def add_3_to_str(self):
self.a = self.a + '3'
def add_4_to_str(self):
self.a = self.a + '4'
def add_5_to_str(self):
self.a = self.a + '5'
def add_6_to_str(self):
self.a = self.a + '6'
def add_7_to_str(self):
self.a = self.a + '7'
def add_8_to_str(self):
self.a = self.a + '8'
def add_9_to_str(self):
self.a = self.a + '9'
def add_0_to_str(self):
self.a = self.a + '0'
def clear_all(self):
self.a = '0'
print(self.a)
root = tk.Tk()
app = Application(master=root)
app.mainloop()