while 循环根据计数创建输入框

Question

谁能帮我理解为什么我的 while 循环没有打印我想要的内容？

我的代码创建了一个带有指定数量标签的 tkinter window。然后它应该创建相同数量的输入框。它同时执行这两项操作。

如果我打印 part_number 变量，它会按预期打印：“第 1 部分”、“第 2 部分”、“第 3 部分”。等等

如果我打印入口变量 returns: ".!entry", ".!entry1", ".!entry2", etc 它应该打印 "part_entry1", " part_entry2", "part_entry3".等等

感谢您的帮助。

from tkinter import *

main = Tk()
main.title('Job Logger')
main.geometry("850x750")

'''''''''
def submit():
    a = part_entry1.get()
    #b = part_entry2.get()
    #c = part_entry3.get()

    print(a)
    #print(b)
    #print(c)
'''

count = 0
x = 50
y = 30
x2 = 150
while count < 3:
    part_number = ('Part ' + (str(count + 1)))
    Label(main, text=part_number).place(x = x, y = y)
    entry = ('part_entry' + (str(count + 1)))
    entry = Entry(main)
    entry.place(width=120, x=x2, y=y)
    y += 30
    count += 1
    print(part_number)
    print(entry)

'''''''''
Button(main, text="Submit Run info", command=submit).place(width=100, x=375, y=200)
'''

mainloop()

Answer 1

主要问题是您试图动态创建变量（并且做错了），但这几乎总是一个糟糕的主意（参见 How do I create variable variables?）。我建议您将 Entry 小部件放在一个列表中，并在您的回调函数中引用它。这就是我的意思：

from tkinter import *

main = Tk()
main.title('BTD Job Logger')
main.geometry("850x750")

def submit():
    for i, entry in enumerate(part_entries, start=1):
        print(f'part entry {i}: {entry.get()!r}')

NUM_PARTS = 3
x = 50
y = 30
x2 = 150

part_entries = []  # List of Entry widgets.
for i in range(NUM_PARTS):
    part_number = 'Part ' + str(i + 1)
    Label(main, text=part_number).place(x=x, y=y)
    entry = Entry(main)
    part_entries.append(entry)
    entry.place(width=120, x=x2, y=y)
    y += 30

Button(main, text="Submit Run info", command=submit).place(width=100, x=375, y=200)

mainloop()

while 循环根据计数创建输入框

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