我正在使用Tkinter在python中创建一个简单的GUI程序。问题是,当我尝试使用按钮从我的条目中检索值时,它会返回error()
:
print(ex1.get())
AttributeError: 'NoneType' object has no attribute 'get'
如何避免这种情况?
这是我的代码:
root = Tk()
root.minsize(300,300)
root.maxsize(300,300)
n = ttk.Notebook()
f1 = Frame(n,height=280,width=280)
f1.propagate(0)
lx1 = Label(f1,text="x",width=5).grid(row = 1,column=0)
ex1 = Entry(f1,width = 10).grid(row = 1,column = 1)
ly1 = Label(f1,text="y",width=5).grid(row=3,column=0)
ey1 = Entry(f1,width = 10).grid(row=3,column = 1)
def value():
print(ex1.get())
Bcreate = Button(f1,text="CREATE",command=value).grid(row = 10,column = 5)
n.add(f1,text="add point")
f2 = Frame(n)
n.add(f2,text="draw line")
n.pack()
答案 0 :(得分:1)
请阅读如何发布正确的MCVE
以下是您的问题:
from tkinter import Tk, Entry
root = Tk()
ent = Entry(root).pack()
print(ent)
print(ent.get())
打印
None
Traceback (most recent call last):
File "F:\Python\mypy\tem.py", line 6, in <module>
print(ent.get())
AttributeError: 'NoneType' object has no attribute 'get'
此时,.pack()
显然会返回None
。所以改为绑定Entry返回的小部件。
from tkinter import Tk, Entry
root = Tk()
ent = Entry(root)
ent.pack()
print(ent)
print(ent.get())
获取
.2425099144832
got .