python实现验证码生成显示

发布时间:2019-08-24 09:22:56编辑:auto阅读(1386)

    from  captcha.image import ImageCaptcha
    import numpy as  np
    import matplotlib.pyplot as  plt
    from  PIL import Image
    import random
    
    number = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
    alphabet = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u','v', 'w', 'x', 'y', 'z']
    Alphabet = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U','V', 'W', 'X', 'Y', 'Z']
    
    
    ##生成n位验证码 这里n=4
    def random_captcha_text(char_set=number + alphabet + Alphabet, captcha_size=4):
        captcha_text = []
        for i in range(captcha_size):
            c = random.choice(char_set)
            captcha_text.append(c)
        return captcha_text
    
    
    ##使用ImageCaptcha库生成验证码
    def gen_captcha_text_and_image():
        image = ImageCaptcha()
        captcha_text = random_captcha_text()
        captcha_text = ''.join(captcha_text)
        captcha = image.generate(captcha_text)
        captcha_image = Image.open(captcha)
        captcha_image = np.array(captcha_image)
        return captcha_text, captcha_image
    
    
    if __name__ == '__main__':
        ##展示验证码
        text, image = gen_captcha_text_and_image()
        f = plt.figure()
        ax = f.add_subplot(111)
        ax.text(0.1, 0.9, text, ha='center', va='center', transform=ax.transAxes)
        plt.imshow(image)
        plt.show()
    

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