[英]Tkinter Share data between (Notebook) Tabs
I have found a very interesting post under the title "TTK Notebook Share Data Between Imported Tabs".我在标题“TTK Notebook Share Data Between Imported Tabs”下发现了一篇非常有趣的帖子。
Here is the link: [https://stackoverflow.com/questions/36032712/ttk-notebook-share-data-between-imported-tabs][1]这是链接:[https://stackoverflow.com/questions/36032712/ttk-notebook-share-data-between-imported-tabs][1]
This is the main application:这是主要应用程序:
I've created as described there and it works.我已经按照那里的描述进行了创建,并且可以正常工作。 But how can I share data between these two classes?
但是我怎样才能在这两个类之间共享数据呢?
For example, if I write the following code to the Main Application:例如,如果我将以下代码写入主应用程序:
self.hello = "Hello World"
page1 = Page1(self.notebook, self.hello)
page2 = Page2(self.notebook, self.hello)
I get the error message:我收到错误消息:
page1 = Page1(self.notebook, self.app_data) page1 = Page1(self.notebook, self.app_data)
TypeError: init () takes 2 positional arguments but 3 were given TypeError: init () 需要 2 个位置 arguments 但给出了 3 个
I have been working on it for days, but unfortunately I do not understand where the mistake is.我已经为此工作了好几天,但不幸的是我不明白错误在哪里。 I would be very happy if someone would help me here.
如果有人在这里帮助我,我会很高兴。
This is the main application (main.py):这是主应用程序(main.py):
import tkinter as tk
from tkinter import ttk
from page1 import Page1
from page2 import Page2
class Example(tk.Frame):
def __init__(self, parent):
tk.Frame.__init__(self, parent)
self.notebook = ttk.Notebook(self)
self.notebook.pack(fill="both", expand=True)
page1 = Page1(self.notebook)
page2 = Page2(self.notebook)
self.notebook.add(page1, text="Tab 1")
self.notebook.add(page2, text="Tab 2")
self.hello = "Hello World"
page1 = Page1(self.notebook, self.hello)
page2 = Page2(self.notebook, self.hello)
if __name__ == "__main__":
root = tk.Tk()
Example(root).pack(fill="both", expand=True)
root.mainloop()
This is the page1 "page1.py":这是第 1 页“page1.py”:
import tkinter as tk
class Page1(tk.Frame):
def __init__(self, parent):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Das ist Tab 1"+ self.hello)
label.pack(fill ="both", expand=True, padx=20, pady=10)
And thi is page2 "page2.py":这是page2“page2.py”:
import tkinter as tk
class Page2(tk.Frame):
def __init__(self, parent):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Das ist Tab 2"+ self.hello)
label.pack(fill ="both", expand=True, padx=20, pady=10)
The error is telling you exactly what is wrong:该错误准确地告诉您出了什么问题:
page1 = Page1(self.notebook, self.app_data)
TypeError: __init()__ takes 2 positional arguments but 3 were given
As we can see, your Page2.__init__
takes two positional arguments: self
and parent
.正如我们所见,您的
Page2.__init__
需要两个位置 arguments: self
和parent
。 When you do Page1(self.notebook, self.app_data)
, self
is automatically passed to __init__
as the first argument.当您执行
Page1(self.notebook, self.app_data)
时, self
会自动作为第一个参数传递给__init__
。 self.notebook
is passed as parent
, and there's no third parameter to accept self.app_data
. self.notebook
作为parent
传递,并且没有接受self.app_data
的第三个参数。
You need to modify __init__
to accept the data parameter:您需要修改
__init__
以接受 data 参数:
class Page2(tk.Frame):
def __init__(self, parent, app_data):
tk.Frame.__init__(self, parent)
self.app_data = app_data
Be aware that will cause a different line to fail, because you also call Page2
without that extra argument here:请注意,这将导致不同的行失败,因为您在这里也调用
Page2
没有那个额外的参数:
page1 = Page1(self.notebook)
It's unclear why you're creating page1
twice, but you need to be consistent in how you're creating it.目前尚不清楚为什么要创建
page1
两次,但您需要在创建它的方式上保持一致。
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