我有一个简单的程序，它制作两个密码框和两个按钮，它们应该在各自的输入框中显示和取消显示文本。这是我当前的代码：
import tkinter as tk
def show_stars(event):
password.config(show="*")
def show_chars(event):
password.config(show="")
root = tk.Tk()
root.title("Password")
password = tk.Entry(root, show="*")
password2 = tk.Entry(root, show="*")
password.grid(row=0, column=1)
password2.grid(row=1, column=1)
password_label = tk.Label(text="Confirm Password:")
password_label.grid(row = 1, column=0)
password_label = tk.Label(text="Password:")
password_label.grid(row = 0, column=0)
button = tk.Button(text = '.')
button.bind("<ButtonPress-1>", show_chars)
button.bind("<ButtonRelease-1>", show_stars)
button.grid(row=0, column=2)
button2 = tk.Button(text = '.')
button2.bind("<ButtonPress-1>", show_chars)
button2.bind("<ButtonRelease-1>", show_stars)
button2.grid(row=1, column=2)
我想这样做，以便我可以像这样将参数传递给show_charsandshow_stars函数：
def show_stars(entry_box):
entry_box.config(show="*")
def show_chars(entry_box):
entry_box.config(show="")
button.bind("<ButtonPress-1>", show_chars(password))
button.bind("<ButtonRelease-1>", show_stars(password))
button2.bind("<ButtonPress-1>", show_chars(password2))
button2.bind("<ButtonRelease-1>", show_stars(password2))
这样它就不会显示和取消显示相同的输入框。有什么办法可以做到这一点吗？
试试这个：
import tkinter as tk
def show_stars(entry_box):
entry_box.config(show="*")
def show_chars(entry_box):
entry_box.config(show="")
root = tk.Tk()
password = tk.Entry(root, show="*")
button = tk.Button(root, text="Show password")
password2 = tk.Entry(root, show="*")
button2 = tk.Button(root, text="Show password")
password.grid(row=1, column=1)
button.grid(row=1, column=2)
password2.grid(row=2, column=1)
button2.grid(row=2, column=2)
button.bind("<ButtonPress-1>", lambda event: show_chars(password))
button.bind("<ButtonRelease-1>", lambda event: show_stars(password))
button2.bind("<ButtonPress-1>", lambda event: show_chars(password2))
button2.bind("<ButtonRelease-1>", lambda event: show_stars(password2))
root.mainloop()
有关如何lambda在 python 中使用的更多信息，请阅读本文
您还可以使用functools.partial：
import tkinter as tk
from functools import partial
def show_stars(entry_box, event):
entry_box.config(show="*")
def show_chars(entry_box, event):
entry_box.config(show="")
root = tk.Tk()
password = tk.Entry(root, show="*")
button = tk.Button(root, text="Show password")
password2 = tk.Entry(root, show="*")
button2 = tk.Button(root, text="Show password")
password.grid(row=1, column=1)
button.grid(row=1, column=2)
password2.grid(row=2, column=1)
button2.grid(row=2, column=2)
command = partial(show_chars, password)
button.bind("<ButtonPress-1>", command)
command = partial(show_stars, password)
button.bind("<ButtonRelease-1>", command)
command = partial(show_chars, password2)
button2.bind("<ButtonPress-1>", command)
command = partial(show_stars, password2)
button2.bind("<ButtonRelease-1>", command)
root.mainloop()
有关functools.partial阅读此内容的更多信息。
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