第一个例子在他的父母中创建了帖子标题（除了它在我搜索新标题时不删除旧标题），但是因为它看起来非常混乱我想把类分成2。
其中一个是checkbutton，它用第二个框架扩展第一个框架，并且应该在其中创建post.titles labels。在第二帧（扩展1.frame）
是2个标签，描述了输入字段，2个条目和搜索按钮。此按钮调用StackoverflowApi中的advanced_search函数，并返回post个对象的列表。这是我的第一堂课createPosts函数中需要的列表。
问题在我的第二个例子中，帖子在第二帧中创建而不是在第一帧中。 Here是一个示例，它应该如何看待它现在看起来如何
import tkinter as tk
import tkinter.ttk as ttk
import StackoverflowApi as API
class SearchFrame:
def __init__(self, parent, title, main_frame):
self.main_frame=main_frame
self.title=title
self.parent=parent
self.expanded = tk.IntVar()
self.expanded.set(0)
self.pagesize=tk.IntVar()
self.pagesize.set(10)
self.tags=tk.StringVar()
self.title_frame=ttk.Frame(self.parent)
self.title_frame.pack(fill="x", expand=1)
self.expand_button=ttk.Checkbutton(self.title_frame,
text=self.title +' +',
command=self.expand,
variable=self.expanded,
style='Toolbutton',
)
self.expand_button.pack(fill='x', expand=1)
#self.expand_button.configure(bg='grey') gonna fix this later
self.sub_frame=ttk.Frame(self.parent, relief='sunken', borderwidth=1)
self.tag_label=ttk.Label(self.sub_frame,
text='Tags').pack(side='left',
expand=1,
pady=5)
self.tag_entry=ttk.Entry(self.sub_frame,
textvariable=self.tags).pack(side='left',
expand=1,
pady=5)
self.pagesize_label=ttk.Label(self.sub_frame,
text='Pagesize').pack(side='left',
expand=1,
pady=5)
self.pagesize_entry=ttk.Entry(self.sub_frame,
textvariable=self.pagesize).pack(side='left',
expand=1,
pady=5)
self.search_button=ttk.Button(self.sub_frame, text='Search',
command=self.search).pack(side='left',
expand=1,
pady=5)
def search(self):
api = API.StackoverflowApi()
self.posts = api.advanced_search(tagged=list(self.tags.get()),
pagesize=self.pagesize.get())
for post in self.posts:
self.post=ttk.Label(self.parent, text=post.title).pack()
def expand(self):
if bool(self.expanded.get()):
self.sub_frame.pack(fill="x", expand=1)
self.expand_button.configure(text=self.title +' -')
else:
self.sub_frame.forget()
self.expand_button.configure(text=self.title +' +')
root = tk.Tk()
search = SearchFrame(root,'Search Options')
search.search()
root.mainloop()
这是我尝试将上面的代码拆分为两个类，因为我觉得它看起来很混乱
from tkinter import *
from tkinter import ttk
import StackoverflowApi as API
root=Tk()
class FrameOne(ttk.Frame):
''' Main Frame in which posts should be created '''
def __init__(self, parent, *args, **kwargs):
ttk.Frame.__init__(self, parent, *args, **kwargs)
self.pack()
#Vars
self.expanded=IntVar()
self.expanded.set(0)
self.expand_button=ttk.Checkbutton(self,
text='Seach Options +',
command=self.expand,
variable=self.expanded,
style='Toolbutton',
)
self.expand_button.pack(fill='x', expand=1)
self.sub_frame=ExtendingFrame(parent, relief='sunken', borderwidth=1)
def expand(self):#function for expanding the second frame
if bool(self.expanded.get()):
self.sub_frame.pack(fill="x", expand=1)
self.expand_button.configure(text='Seach Options -')
else:
self.sub_frame.forget()
self.expand_button.configure(text='Seach Options +')
def createPosts(self, posts):
for post in posts:
self.post=ttk.Label(self, text=post.title)
self.post.pack()
class ExtendingFrame(FrameOne):
''' this is the frame, which apperas when the checkbutton in the first frame
is clicked.
The Frame has 2 entries "tags" and "pagesize" I need these for my api call
'''
def __init__(self, parent, *args, **kwargs):
self.parent=parent
ttk.Frame.__init__(self, parent, *args, **kwargs)
#Vars
self.tags=StringVar()
self.pagesize=IntVar()
self.pagesize.set(15)
self.tag_label=ttk.Label(self, text='Tags', anchor='e')
self.tag_label.pack(fill='x', expand=1, side='left', pady=5, padx=2)
self.tag_entry=ttk.Entry(self, textvariable=self.tags)
self.tag_entry.pack(fill='x', expand=1, side='left', pady=5)
self.pagesize_label=ttk.Label(self, text='Pagesize', anchor='e')
self.pagesize_label.pack(fill='x', expand=1,side='left', pady=5, padx=2)
self.pagesize_entry=ttk.Entry(self, textvariable=self.pagesize)
self.pagesize_entry.pack(fill='x', expand=1, side='left', pady=5)
self.search_button=ttk.Button(self, text='Search',command=self.search)
self.search_button.pack(fill='x', expand=1, side='left', pady=5, padx=2)
def search(self):
''' calls the search function of the api, with the '''
api = API.StackoverflowApi()
self.posts = api.advanced_search(
tagged=list(self.tags.get()),
pagesize=self.pagesize.get()
)
#self.posts is a list of question objects returned by the api
return super().createPosts(self.posts)#I need the objects from the list in my createPosts function
main=FrameOne(root)
root.mainloop()
答案 0 :(得分：0)
下面的代码有两个类，MainApp用于构建应用程序的最外层框架，然后是SearchFrame类，它使用MainApp中的方法在其父窗口小部件中创建标签。在这种情况下，SearchFrame的父窗口小部件为MainApp。如果要查看标签实际上是在父窗口小部件子类self.frame2内创建的，则可以将几何管理器注释掉MainApp。我再次怀疑这是一个好习惯：
import tkinter as tk
root = tk.Tk()
class MainApp(tk.Frame):
def __init__(self, master):
super().__init__(master)
#a child frame of MainApp object
self.frame1 = tk.Frame(self)
tk.Label(self.frame1, text="This is MainApp frame1").pack()
self.frame1.grid(row=0, column=0, sticky="nsew")
#another child frame of MainApp object
self.frame2 = SearchFrame(self)
self.frame2.grid(row=0, column=1, sticky="nsew")
def create_labels(self, master):
return tk.Label(master, text="asd")
class SearchFrame(tk.Frame):
def __init__(self, master):
super().__init__(master)
self.label = tk.Label(self, text="this is SearchFrame")
self.label.pack()
master.label1 = MainApp.create_labels(self, master)
master.label1.grid()
mainAppObject = MainApp(root)
mainAppObject.pack()
root.mainloop()