Python利用wxPython制作一个有趣的验证码生成器

import wx
import random
import string
from PIL import Image, ImageDraw, ImageFont
 
 
class MyFrame(wx.Frame):
    def __init__(self, parent):
        super().__init__(parent, title="CAPTCHA Generator", size=(300, 200))
        panel = wx.Panel(self)
        button = wx.Button(panel, label="Generate CAPTCHA", pos=(0, 0))
        self.Bind(wx.EVT_BUTTON, self.on_button_click, button)
        # 创建一个静态图片控件
        self.static_bitmap = wx.StaticBitmap(panel, -1, size=(200, 80), pos=(40, 60))
    def on_button_click(self, event):
        # Set the dimensions of the image
        IMAGE_WIDTH = 200
        IMAGE_HEIGHT = 80
 
        # Generate a random string of characters to use as the CAPTCHA text
        captcha_text = ''.join(random.choices(string.ascii_uppercase + string.digits, k=6))
 
        # Create a blank image and get a drawing context
        image = Image.new('RGB', (IMAGE_WIDTH, IMAGE_HEIGHT), color = (255, 255, 255))
        draw = ImageDraw.Draw(image)
 
        # Generate a random color for the text
        text_color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
 
        # Load a TrueType font file to use for the text
        font = ImageFont.truetype('arial.ttf', 36)
 
        # Draw the CAPTCHA text on the image
        x0, y0, x1, y1 = draw.textbbox((0, 0), captcha_text, font=font)
        text_width = x1 - x0
        text_height = y1 - y0
        x = (IMAGE_WIDTH - text_width) / 2
        y = (IMAGE_HEIGHT - text_height) / 2
        draw.text((x, y), captcha_text, fill=text_color, font=font)
 
        # Add some noise to the image by drawing randomly placed dots
        for i in range(500):
            x = random.randint(0, IMAGE_WIDTH - 1)
            y = random.randint(0, IMAGE_HEIGHT - 1)
            draw.point((x, y), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
 
        # Save the image as a PNG file with the CAPTCHA text as the filename
        image.save(captcha_text + '.png', 'PNG')
        # 加载PNG图片文件并显示在静态图片控件中
        bitmap = wx.Bitmap(captcha_text + '.png', wx.BITMAP_TYPE_PNG)
        self.static_bitmap.SetBitmap(bitmap)
if __name__ == '__main__':
    app = wx.App()
    frame = MyFrame(None)
    frame.Show(True)
    app.MainLoop()