擅长:python、mysql、java
<pre><code>from tkinter import *
from tkinter import messagebox
root = Tk()
def check_entry():
v = ent.get()
if v == "hello world":
print("hello world")
else:
messagebox.showerror("it is not hello world")
print("write hello world")
ent.delete(0,END)
ent = Entry(root)
button = Button(root,text="Click me",command=check_entry)
ent.pack()
button.pack()
root.mainloop()
</code></pre>