获取追踪和AttributeError异常:'NoneType'对象有没有属性'得到' [英] Getting traceback and AttributeError: 'NoneType' object has no attribute 'get'
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问题描述
所以我试图让使用Tkinter的和python一个简单的计算器程序。我有一些普通code下来加法和减法,但我得到这个错误。请指教,在code下面写的。
异常在Tkinter的回调
回溯(最近通话最后一个):
文件C:\\ Python32 \\ lib目录\\ Tkinter的\\ __ init__.py,1399线,在__call__
返回self.func(*参数)
文件C:\\用户\\ ** \\工作区\\ calcApp \\ calcApp \\ guiCalc.py,第21行,在numClick
输入= INT(entry.get())
AttributeError异常:'NoneType'对象有没有属性'得到'
guiCalc.py
:
从Tkinter的进口*一流的计算:
高清的init(): 根= TK()
root.wm_title(计算器) 输入= 0
瓦兰= STRINGVAR()
瓦林=
LabelText的= STRINGVAR()
ANS =
ANS2 = 进入=输入(根).grid() 高清numClick():
输入= INT(entry.get())
entry.delete(0,END)
高清equalClick():
如果(entry.get()==+):
ANS =输入+ INT(entry.get())
label.configure(文= ANS)
如果(entry.get()== - ):
ANS2 =输入INT(entry.get())
label.configure(文= ANS2) 按钮(根,文本=+,命令= numClick).grid()
按钮(根,文本= - ,命令= numClick).grid()
按钮(根,文本==,命令= equalClick).grid() 标签=标签(根,文本=)
label.grid()
root.mainloop()Calc.init()
解决方案
项=输入(根).grid()
输入
是无
在这里,因为电网
没有按T返回任何东西。也许你的意思做:
项=输入(根)
entry.grid()
So I am trying to make a simple calculator program using Tkinter and python. I have some general code down for addition and subtraction but am getting this error. Please advise, the code is written below.
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python32\lib\tkinter\__init__.py", line 1399, in __call__
return self.func(*args)
File "C:\Users\**\workspace\calcApp\calcApp\guiCalc.py", line 21, in numClick
input = int(entry.get())
AttributeError: 'NoneType' object has no attribute 'get'
guiCalc.py
:
from tkinter import *
class Calc:
def init():
root = Tk()
root.wm_title("Calculator")
input = 0
varIn = StringVar()
varIn = ""
labelText = StringVar()
ans = ""
ans2 = ""
entry = Entry(root).grid()
def numClick():
input = int(entry.get())
entry.delete(0, END)
def equalClick():
if(entry.get()=="+"):
ans = input + int(entry.get())
label.configure(text=ans)
if(entry.get()=="-"):
ans2 = input-int(entry.get())
label.configure(text = ans2)
Button(root, text="+", command=numClick).grid()
Button(root, text="-", command=numClick).grid()
Button(root, text="=", command =equalClick).grid()
label = Label(root, text="")
label.grid()
root.mainloop()
Calc.init()
解决方案
entry = Entry(root).grid()
entry
is None
here, because grid
doesn't return anything. Perhaps you meant to do:
entry = Entry(root)
entry.grid()
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