使用pillow, 生成一張圖片驗證碼

pillow 博客文檔

模塊pillow使用

安裝

pip install pillow

生成圖片驗證碼

圖片驗證碼需要使用到字體，一般字體庫爲ttf後綴結尾的文件，可以網上自省下載，這裏我提供一個分享的下載地址。
鏈接：https://pan.baidu.com/s/1MnzaZuxmEPGkNpMBMKjuEA
提取碼：nunu

import random
from PIL import Image,ImageDraw,ImageFont,ImageFilter

def check_code(width=120, height=30, char_length=5, font_file='xueyi.ttf', font_size=28):
    code = []
    img = Image.new(mode='RGB', size=(width, height), color=(255, 255, 255))
    draw = ImageDraw.Draw(img, mode='RGB')
 
    def rndChar():
        """
        生成隨機字母   
        :return:
        """
        return chr(random.randint(65, 90))
 
    def rndColor():
        """
        生成隨機顏色
        :return:
        """
        return (random.randint(0, 255), random.randint(10, 255), random.randint(64, 255))
 
    # 寫文字
    font = ImageFont.truetype(font_file, font_size)
    for i in range(char_length):
        char = rndChar()
        code.append(char)
        h = random.randint(0, 4)
        draw.text([i * width / char_length, h], char, font=font, fill=rndColor())
 
    # 寫干擾點
    for i in range(40):
        draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
 
    # 寫干擾圓圈
    for i in range(40):
        draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
        x = random.randint(0, width)
        y = random.randint(0, height)
        draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor())
 
    # 畫干擾線
    for i in range(5):
        x1 = random.randint(0, width)
        y1 = random.randint(0, height)
        x2 = random.randint(0, width)
        y2 = random.randint(0, height)
 
        draw.line((x1, y1, x2, y2), fill=rndColor())
 
    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)
    return img,''.join(code)
 
 
if __name__ == '__main__':
    # 1. 直接打開
    img,code = check_code()
    img.show()
     
    # 2. 寫入文件
    # img,code = check_code()
    # with open('code.png','wb') as f:
    #     img.save(f,format='png')
 
    # 3. 寫入內存(Python3)
    # from io import BytesIO
    # stream = BytesIO()
    # img.save(stream, 'png')
    # stream.getvalue()
 
    # 4. 寫入內存（Python2）
    # import StringIO
    # stream = StringIO.StringIO()
    # img.save(stream, 'png')
    # stream.getvalue()