大佬教程收集整理的这篇文章主要介绍了Python Tkinter：为列表框中的每个字符串创建一个变量？，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
我（几乎）是一个糟糕的程序员处女，所以请对我放轻松。@H_616_3@
这是我第二次尝试制作程序，但结果证明这有点超出我的能力范围，恐怕。在尝试解决这个问题很长时间后，我请求您的帮助。@H_616_3@
我基本上是在做一个待办事项列表，但希望它有更多的功能，而不仅仅是一个无聊的列表。@H_616_3@
我在脑海中的想象是，用户将任务添加到条目小部件中，然后该小部件将显示在列表框中。然后列表框中的每个字符串都有一个与之关联的值（我需要对我希望程序具有的功能进行一些计算）。 所以我想我想要的是 ListBox 中的每个字符串都成为一个变量，然后与该变量关联我想要一个值。@H_616_3@
我会尽力向您展示：@H_616_3@
这里我添加了我想成为新变量的字符串@H_616_3@
然后我从下拉菜单中指定一个数字。我希望这个数字是上一步中变量/字符串的值。@H_616_3@
@L_419_1@@H_616_3@
我真的希望你们中的一个人能以一种（最好）不需要我对事情做太多改变的方式引导我走向正确的方向。事情对我来说仍然很棘手，我已经很难浏览代码了。 目的很简单，我想对与每个任务相关联的（希望）即将成为的值进行一些计算。 如果你们有胆量，请提前致谢！@H_616_3@
相关代码在这里：@H_616_3@
@H_import tkinter.messageBox # import the messageBox module
import pickle # Module to save to .dat
import tkinter as tk
root = tk.Tk() #
root.title('smaTodo') # name of the program/window
def new_task():
global entry_task
global task_window
task_window = toplevel(root)
task_window.title('Add a new task')
task_label = tk.Label(task_window,text = 'title your task concisely:',justify='center')
task_label.pack()
# Entry for tasks in new window
entry_task = tkinter.Entry(task_window,wIDth=50,justify='center')
entry_task.pack()
# Add task button in new window
button_add_task = tkinter.button(task_window,text='Add task',wIDth=42,command=lambda: [add_task(),impact()])
button_add_task.pack()
def add_task():
global task
global impact_window
task = entry_task.get() # we get the task from entry_task and we get the input from the entry_task type-fIEld with .get()
if task != '': # If textBox inputfIEld is NOT empty do this:
ListBox_tasks.insert(tkinter.END,task)
entry_task.delete(0,tkinter.END) # Slet hvad der står i inputfeltet fra første bogstav til sIDste (0,tkinter.END)
task_window.destroy()
else:
tkinter.messageBox.showwarning(title='Whoops',message='You must enter a task')
task_window.destroy()
def delete_task():
try:
task_index = ListBox_tasks.curSELEction()[0]
ListBox_tasks.delete(task_indeX)
except:
tkinter.messageBox.showwarning(title='Oops',message='You must SELEct a task to delete')
def save_tasks():
tasks = ListBox_tasks.get(0,ListBox_tasks.size())
pickle.dump(tasks,open('tasks.dat','wb'))
def prioritize_tasks():
pass
# Create UI
frame_tasks = tkinter.Frame(root)
frame_tasks.pack()
scrollbar_tasks = tkinter.Scrollbar(frame_tasks)
scrollbar_tasks.pack(sIDe=tkinter.RIGHT,fill=tkinter.Y)
ListBox_tasks = tkinter.ListBox(frame_tasks,height=10,justify='center') # tkinter.ListBox(where it should go,height=x,wIDth=xX)
ListBox_tasks.pack()
ListBox_tasks.config(yscrollcommand=scrollbar_tasks.set)
scrollbar_tasks.config(command=ListBox_tasks.yvIEw)
try:
tasks = pickle.load(open('tasks.dat','rb'))
ListBox_tasks.delete(0,tkinter.END)
for task in tasks:
ListBox_tasks.insert(tkinter.END,task)
except:
tkinter.messageBox.showwarning(title='Phew',message='You have no tasks')
# Add task button
button_new_task = tkinter.button(root,text='New task',command=new_task)
button_new_task.pack()
button_delete_task = tkinter.button(root,text='delete task',command=delete_task)
button_delete_task.pack()
button_save_tasks = tkinter.button(root,text='Save tasks',command=save_tasks)
button_save_tasks.pack()
button_prioritize_tasks = tkinter.button(root,text='Prioritize',command=prioritize_tasks)
button_prioritize_tasks.pack()
root.mainloop()
简单的方法是添加另一个 list 来存储影响值。您需要同步任务列表和影响列表。@H_616_3@
import pickle # Module to save to .dat
import tkinter as tk
from tkinter import messagebox
import random
TASKS_FILE = "tasks.dat"
task_impacts = [] # store impact of tasks
root = tk.Tk() #
root.title('smaToDo') # Name of the program/window
def impact():
# assign random impact to new task
task_impacts.append(random.randint(1,11))
def new_task():
def add_task():
task = entry_task.get().Strip()
if task:
listbox_tasks.insert(tk.END,task)
impact() # get the impact of the task
else:
messagebox.showwarning(title='Whoops',message='You must enter a task')
task_window.destroy()
task_window = tk.Toplevel(root)
task_window.title('Add a new task')
task_label = tk.Label(task_window,text = 'title your task concisely:',justify='center')
task_label.pack()
# Entry for tasks in new window
entry_task = tk.Entry(task_window,width=50,justify='center')
entry_task.pack()
# Add task button in new window
button_add_task = tk.button(task_window,text='Add task',width=42,command=add_task)
button_add_task.pack()
def delete_task():
try:
task_index = listbox_tasks.curSELEction()[0]
listbox_tasks.delete(task_indeX)
task_impacts.pop(task_indeX) # remove corresponding impact value as well
except:
messagebox.showwarning(title='Oops',message='You must SELEct a task to delete')
def load_tasks():
try:
with open(TASKS_FILE,'rb') as f:
tasks = pickle.load(f)
listbox_tasks.delete(0,tk.END)
task_impacts.clear()
for task,impact in tasks:
listbox_tasks.insert(tk.END,task)
task_impacts.append(impact)
except:
messagebox.showwarning(title='Phew',message='You have no tasks')
def save_tasks():
tasks = zip(listbox_tasks.get(0,tk.END),task_impacts)
with open(TASKS_FILE,"wb") as f:
pickle.dump(tasks,f)
def prioritize_tasks():
print(list(zip(listbox_tasks.get(0,task_impacts)))
# Create UI
frame_tasks = tk.Frame(root)
frame_tasks.pack()
scrollbar_tasks = tk.Scrollbar(frame_tasks)
scrollbar_tasks.pack(side=tk.RIGHT,fill=tk.Y)
listbox_tasks = tk.Listbox(frame_tasks,height=10,justify='center') # tkinter.Listbox(where it should go,height=x,width=xX)
listbox_tasks.pack()
listbox_tasks.config(yscrollcommand=scrollbar_tasks.set)
scrollbar_tasks.config(command=listbox_tasks.yview)
# Add task button
button_new_task = tk.button(root,text='New task',command=new_task)
button_new_task.pack()
button_delete_task = tk.button(root,text='delete task',command=delete_task)
button_delete_task.pack()
button_save_tasks = tk.button(root,text='Save tasks',command=save_tasks)
button_save_tasks.pack()
button_prioritize_tasks = tk.button(root,text='Prioritize',command=prioritize_tasks)
button_prioritize_tasks.pack()
load_tasks()
root.mainloop()
请注意，我有：@H_616_3@
add_task() 函数移到 new_task() 函数中以不使用全局变量impact() 函数来为新任务分配一个随机影响值load_tasks()
更好的建议是使用 ttk.Treeview() 而不是 tk.Listbox()，因为您可以使用 tags 或 text 选项将影响值与任务相关联{{ 1}}。@H_616_3@
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