我想使用定义网络数量的 Tkinter 创建一个 Python 脚本,并使用用户在输入字段中插入的值,在下一页中创建 x 次网络来定义。然后用户插入的值来创建一个具有如下模式的文件:
--- #
networks:
- { cloud: cloud1, network: }
- { cloud: cloud1, network: }
- { cloud: cloud1, network: }
- { cloud: cloud1, network: }
...
例子:
如果用户在“定义网络数量”页面上输入 20,那么我们应该在“定义网络”页面中有 20 个输入字段,在文件中应该有 20 行,如下所示: - { cloud: cloud1, network: }
@AXK 帮助我完成了这项工作,非常感谢。例如,当我有10多个网络要介绍时,我也想有一个卷轴。我已经尝试在 AXK 代码上进行如下更改:
import Tkinter as tk
import tkFont as tkfont
import sys
from Tkinter import *
class SampleApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
self.title_font = tkfont.Font(
family="Helvetica", size=18, weight="bold", slant="italic"
)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.container = container
self.current_frame = None
self.num_networks = tk.IntVar() # Var shared between pages
self.show_frame("StartPage")
def show_frame(self, page_name):
"""Show a frame for the given page name"""
if self.current_frame:
self.current_frame.destroy()
self.current_frame = None
frame_class = globals()[page_name] # Ugly, but works.
frame = frame_class(parent=self.container, controller=self)
frame.grid(row=0, column=0, sticky="nsew")
frame.tkraise()
self.current_frame = frame
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(self,text="This is the start page",font=controller.title_font)
label.pack(side="top", fill="x", pady=10)
button1 = tk.Button(self,text="Define the number of networks",command=lambda: controller.show_frame("PageOne"))
button1.pack()
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(self,text="Define the number of networks",font=controller.title_font)
label.pack(side="top", fill="x", pady=10)
nwnum = tk.Entry(self, textvariable=controller.num_networks)
nwnum.pack()
button1 = tk.Button(self,text="Go to the start page",command=lambda: controller.show_frame("StartPage"),)
button1.pack()
button2 = tk.Button(self,text="Define the networks",command=lambda: controller.show_frame("PageTwo"),)
button2.pack()
class PageTwo(tk.Frame):
def getent1(self):
with open("/home/dante/output.txt", "w") as f:
f.write("--- #" + "\n")
f.write("networks:" + "\n")
for entvar in self.entry_vars:
value = entvar.get()
if value:
f.write("- { cloud: cloud1, network: "+ value+ " }"+ "\n")
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
self.scrollbar = Scrollbar(self, orient='vertical')
label = tk.Label(self,text="Define the networks",font=controller.title_font)
label.pack(side="top", fill="x", pady=10)
self.entries = []
self.entry_vars = []
self.scrollbar.config(command=self.yview)
self.scrollbar.pack(side='right', fill='y')
for t in range(1, self.controller.num_networks.get()+1):
entvar = tk.StringVar()
ent = tk.Entry(self, textvariable=entvar)
self.entry_vars.append(entvar)
self.entries.append(ent)
ent.pack()
button3 = tk.Button(self,text="Go to the start page",command=lambda: controller.show_frame("StartPage"),)
button3.pack()
button4 = tk.Button(self, text="Create the networks", command=self.getent1)
button4.pack()
def yview(self, *args):
self.entry_vars.yview(*args)
if __name__ == "__main__":
app = SampleApp()
app.mainloop()
当我运行它时,我看到选项卡右侧的滚动条,但是当我向下或向上按下时,出现以下错误:
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib64/python2.7/lib-tk/Tkinter.py", line 1470, in __call__
return self.func(*args)
File "program.py", line 96, in yview
self.entry_vars.yview(*args)
AttributeError: 'list' object has no attribute 'yview'
我怎样才能做到这一点?
PS我对编程很陌生
我重构了一些东西:
sys.stdout
,而不是文件,因为我没有/home/dante
. ;)show_frame
被调用时创建。controller
; 子帧从那里写入/读取它。import tkinter as tk
from tkinter import font as tkfont
import sys
class SampleApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
self.title_font = tkfont.Font(
family="Helvetica", size=18, weight="bold", slant="italic"
)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.container = container
self.current_frame = None
self.num_networks = tk.IntVar() # Var shared between pages
self.show_frame("StartPage")
def show_frame(self, page_name):
"""Show a frame for the given page name"""
if self.current_frame:
self.current_frame.destroy()
self.current_frame = None
frame_class = globals()[page_name] # Ugly, but works.
frame = frame_class(parent=self.container, controller=self)
frame.grid(row=0, column=0, sticky="nsew")
frame.tkraise()
self.current_frame = frame
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(
self,
text="This is the start page",
font=controller.title_font,
)
label.pack(side="top", fill="x", pady=10)
button1 = tk.Button(
self,
text="Define the number of networks",
command=lambda: controller.show_frame("PageOne"),
)
button1.pack()
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(
self,
text="Define the number of networks",
font=controller.title_font,
)
label.pack(side="top", fill="x", pady=10)
nwnum = tk.Entry(self, textvariable=controller.num_networks)
nwnum.pack()
button1 = tk.Button(
self,
text="Go to the start page",
command=lambda: controller.show_frame("StartPage"),
)
button1.pack()
button2 = tk.Button(
self,
text="Define the networks",
command=lambda: controller.show_frame("PageTwo"),
)
button2.pack()
class PageTwo(tk.Frame):
def getent1(self):
f = sys.stdout
f.write("--- #" + "\n")
f.write("networks:" + "\n")
for entvar in self.entry_vars:
value = entvar.get()
if value:
f.write(
"- { cloud: cloud1, network: "
+ value
+ " }"
+ "\n"
)
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(
self,
text="Define the networks",
font=controller.title_font,
)
label.pack(side="top", fill="x", pady=10)
self.entries = []
self.entry_vars = []
for t in range(1, self.controller.num_networks.get()):
entvar = tk.StringVar()
ent = tk.Entry(self, textvariable=entvar)
self.entry_vars.append(entvar)
self.entries.append(ent)
ent.pack()
button3 = tk.Button(
self,
text="Go to the start page",
command=lambda: controller.show_frame("StartPage"),
)
button3.pack()
button4 = tk.Button(
self, text="Create the networks", command=self.getent1
)
button4.pack()
if __name__ == "__main__":
app = SampleApp()
app.mainloop()
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