Python graphical interface basics: adding labels (Label) to the Tkinter window

introduction

In the basics of Python graphics processing, learning how to create and manage GUI elements is an important step. This article will focus on how to add labels ( Label ), a basic GUI element in Tkinter . Labels are typically used to display text or images that provide information or guide the user. We will explain in detail how to add tags in Tkinter windows to add more content to your GUI applications.

What is a Tkinter label (Label)?

Tkinter 's labels are controls used to display text or images in a GUI window. It is one of the most basic elements in the GUI interface and is often used to display titles, descriptions, status information, etc. Labels are usually read-only and users cannot interact with them directly, but they can be very useful in providing information and beautifying the interface.

Let's start learning how to add labels in Tkinter windows.

Step 1: Import the Tkinter module

First, make sure you have Python installed and the Tkinter library available. Then, import the Tkinter module in your Python script to use Tkinter 's functionality.

import tkinter as tk

Step 2: Create Tkinter window

Before using Tkinter , you need to create a Tkinter window object, usually called root. This window will serve as the main window of the GUI application.

root = tk.Tk()

Step 3: Create label (Label)

To create a label, you use Labela class. Here's an example of creating a simple label:

label = tk.Label(root, text="这是一个Tkinter标签")

In the example above, we create a label object, attach it to rootthe window, and set the label's text content to "This is a Tkinter label". You can customize the text as needed.

Step 4: Add label to window

Once the label object is created, pack()it needs to be added to the window using the method. This will determine the label's position in the window.

label.pack()

pack()Method automatically adjusts the label's position based on the window's size and content.

Complete sample code

Here is a complete example code demonstrating how to create a Tkinter window and add a label to it:

import tkinter as tk

# 创建Tkinter窗口
root = tk.Tk()
root.title("Tkinter标签示例")

# 创建标签
label = tk.Label(root, text="这是一个Tkinter标签")

# 将标签添加到窗口
label.pack()

# 启动Tkinter主事件循环
root.mainloop()

Rendering:

code explanation

Let us explain the above code line by line:

• First, we imported the Tkinter module in order to use the functionality of the Tkinter library.

• Next, we created a Tkinter window object rootand set the title of the window to " Tkinter Label Example".

• We then created a label object labeland set its text content to "This is a Tkinter label".

• Finally, we pack()added the label to the window using the method and started Tkinter 's main event loop.

Custom label properties

In addition to setting the text content, you can also customize the appearance of the label by modifying other properties of the label. For example, you can set the font, background color, foreground color (text color), etc. Here's an example of how to customize the appearance of a label:

# 创建一个自定义样式的标签
custom_label = tk.Label(
    root,
    text="自定义样式的标签",
    font=("Helvetica", 16),  # 设置字体和字号
    bg="lightblue",          # 设置背景颜色
    fg="navy"                # 设置前景颜色（文本颜色）
)

# 将标签添加到窗口
custom_label.pack()

Rendering:

In the example above, we created a custom styled label, setting the font, background color, and foreground color. You can customize these properties according to your needs.

in conclusion

In this article, we learned how to add labels in a Tkinter window, which is one of the basic steps in creating GUI applications. Labels are used to display text or images, provide information and beautify the user interface. By creating tags, you can add more content and information to your Tkinter application, improving the user experience. In the following tutorials, we will continue to explore how to add other GUI elements and how to handle user interaction events to build richer and more powerful GUI applications. Keep learning and you'll be able to create more interesting and useful GUI applications!