Heim >Backend-Entwicklung >Python-Tutorial >Erstellen Sie einen unterhaltsamen Captcha-Generator mit wxPython: von Grund auf
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()
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