python tkinter entry widget example
Create an Entry input box and set the width to 25 characters, and use pack() to layout; 2. Get user input content through entry.get(); 3. Read input when clicking the button. If it is not empty, it will display "Hello, input content" on the label, otherwise it will prompt "Input cannot be empty"; 4. Optional functions include Enter to trigger a click event, clear the input box, set the default text and disable the input status; 5. This example fully implements the input, processing and feedback process, and is suitable for basic scenarios such as login forms and search boxes.
Below is a simple Python tkinter.Entry widget example showing how to create an input box, get user input, and display the input when the button is clicked.
Basic functions:
- Create an
Entryinput box - Add a button
- Click the button and read the input and display it on the label
import tkinter as tk
# Create main window root = tk.Tk()
root.title("Tkinter Entry Example")
root.geometry("300x150")
# Create a tag to prompt the user to enter label_prompt = tk.Label(root, text="Please enter your name:")
label_prompt.pack(pady=10)
# Create an Entry input box entry = tk.Entry(root, width=25)
entry.pack(pady=5)
# Create a button, click to display the input content def on_button_click():
user_input = entry.get() # Get input if user_input.strip():
result_label.config(text=f"Hello, {user_input}!")
else:
result_label.config(text="Input cannot be empty!")
button = tk.Button(root, text="hello", command=on_button_click)
button.pack(pady=5)
# Create a tag to display the result result_label = tk.Label(root, text="", fg="blue")
result_label.pack(pady=10)
# Run the main event loop root.mainloop()Key points description:
1. Entry creation
entry = tk.Entry(root, width=25) entry.pack()
-
widthsets the width of the input box (in characters) - Use
.pack()layout manager to place controls
2. Get input content
user_input = entry.get()
- The
.get()method is used to get the text in the current input box.
3. Clear the input box (optional)
entry.delete(0, tk.END)
- Commonly used to clear the input box after submission
4. Bind the Enter key (enhanced experience)
You can also let press Enter to trigger the button function:
entry.bind('<Return>', lambda event: on_button_click())
Add it after entry is created.
Extension: Set default text or disable input
entry.insert(0, "default name") # Insert the default text entry.config(state='disabled') # Disable input (can be restored with 'normal')
Basically that's it. This example is suitable for beginners to quickly master the basic usage of Entry . It is often used in actual projects for login forms, search boxes and other scenarios.
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