属性错误python tkinter
我正在尝试使用一个类来制作一个计算器(我对此很陌生),这段代码一直告诉我AttributeError:“calculator”对象没有“clear”属性,当我运行代码时,类中的所有内容都不起作用。我能做些什么来修复我的代码属性错误python tkinter,python,tkinter,attributeerror,Python,Tkinter,Attributeerror,我正在尝试使用一个类来制作一个计算器(我对此很陌生),这段代码一直告诉我AttributeError:“calculator”对象没有“clear”属性,当我运行代码时,类中的所有内容都不起作用。我能做些什么来修复我的代码 class Calculator(Frame): def __init__(self): Frame.__init__(self) display = Frame(calculator, bd=0, width=1000, height
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
results.pack()
results.grid(column=0, row=0)
def showup(x):
return lambda: results.insert(END, x)
def equals(self):
try:
result = eval(results.get())
except:
result = "Invalid input"
self.all_clear
results.insert(0, result)
def zero(self):
results.insert(END, "0")
def bracket_one(self):
results.insert(END, "(")
def bracket_two(self):
results.insert(END, ")")
def all_clear(self):
results.delete(0, END)
def clear(self):
results.delete(-1)
def multiplication(self):
results.insert(END, "x")
def division(self):
results.insert(END, "/")
def addition(self):
results.insert(END, "+")
def subtraction(self):
results.insert(END, "-")
def decimal_point(self):
results.insert(END, ".")
您在
类计算器(框架)中的缩进错误:
,您将所有方法缩进了\uuu init\uuu()
中,而不是类中。减少诸如-equals(self)
,zero(self)
等方法的缩进,并将它们移到\uuuuu init\uuuu()
之外
此外,还应将结果
作为实例变量。并将其作为实例变量访问-self.results
范例-
from tkinter import *
from tkinter import messagebox
calculator = Tk()
calculator.title("Calcualtor")
calculator.geometry("317x145")
menubar = Menu(calculator)
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
self.results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
self.results.pack()
self.results.grid(column=0, row=0)
def showup(x):
return lambda: self.results.insert(END, x)
numbers=["7", "4", "1", "8", "5", "2", "9", "6", "3"]
for i in range(9):
n=numbers[i]
Button(buttons, bg="snow", text=n, width=7, height=1, command=showup(n), relief=RAISED).grid(row=i%3, column=i//3)
Clear = Button(buttons, bg="snow", text="C", width=7, height=1, command=self.clear, relief=RAISED)
Clear.grid(padx=2, pady=2, column=3, row=0)
All_clear = Button(buttons, bg="snow", text="AC", width=7, height=1, command=self.all_clear, relief=RAISED)
All_clear.grid(padx=2, pady=2, column=4, row=0)
Bracket_one = Button(buttons, bg="snow", text="(", width=7, height=1, command=self.bracket_one, relief=RAISED)
Bracket_one.grid(padx=2, pady=2, column=2, row=3)
Bracket_two = Button(buttons, bg="snow", text=")", width=7, height=1, command=self.bracket_two, relief=RAISED)
Bracket_two.grid(padx=2, pady=2, column=3, row=3)
Zero = Button(buttons, bg="snow", text="0", width=7, height=1, command=self.zero, relief=RAISED)
Zero.grid(padx=2, pady=2, column=0, row=3)
Decimal_point = Button(buttons, bg="snow", text=".", width=7, height=1, command=self.decimal_point, relief=RAISED)
Decimal_point.grid(padx=2, pady=2, column=1, row=3)
Multiplication = Button(buttons, bg="red", text="x", width=7, height=1, command=self.multiplication, relief=RAISED)
Multiplication.grid(padx=2, pady=2, column=3, row=1)
Division = Button(buttons, bg="powder blue", text="/", width=7, height=1, command=self.division, relief=RAISED)
Division.grid(padx=2, pady=2, column=4, row=1)
Addition = Button(buttons, bg="yellow", text="+", width=7, height=1, command=self.addition, relief=RAISED)
Addition.grid(padx=2, pady=2, column=3, row=2)
Subtraction = Button(buttons, bg="green", text="-", width=7, height=1, command=self.subtraction, relief=RAISED)
Subtraction.grid(padx=2, pady=2, column=4, row=2)
Equals = Button(buttons, bg="orange", text="=", width=7, height=1, command=self.equals, relief=RAISED)
Equals.grid(padx=2, pady=2, column=4, row=3)
def equals(self):
try:
result = eval(self.results.get())
except:
result = "Invalid input"
self.all_clear()
self.results.insert(0, result)
def zero(self):
self.results.insert(END, "0")
def bracket_one(self):
self.results.insert(END, "(")
def bracket_two(self):
self.results.insert(END, ")")
def all_clear(self):
self.results.delete(0, END)
def clear(self):
self.results.delete(-1)
def multiplication(self):
self.results.insert(END, "x")
def division(self):
self.results.insert(END, "/")
def addition(self):
self.results.insert(END, "+")
def subtraction(self):
self.results.insert(END, "-")
def decimal_point(self):
self.results.insert(END, ".")
if __name__ == '__main__':
Calculator().mainloop()
calculator.config(menu=menubar)
calculator.mainloop()
你应该把你所有的函数都放在uu init uu()函数之外。我把它们都移到了外面,但是现在我的求值函数不起作用了,每次我输入等式并按equals,它总是说“无效输入”,加上我刚才输入的任何东西,我的求值怎么会不起作用了?我严格遵循了这一点,每当我输入数字时,当我按Equals时,我的计算器就会给我无效的输入。你只是得到了结果,你需要将其设置回self。结果对不起,我不明白。。。我以为我的评估会处理这些计算?我需要做什么才能再次计算条目?它现在可以工作了,但它没有清除我刚才输入的等式。例如,如果我输入63+2,然后点击“=”它给我6563+2不,实际上缩进也有点错误。