Generating a random codes:

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


def check_code(width=120, height=30, char_length=5, font_file='kumo.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():
        """
        生成随机字母
        :return:
        """
        return chr(random.randint(65, 90))

    def rndColor():
        """
        生成随机颜色
        :return:
        """
        return (random.randint(0, 255), random.randint(10, 255), random.randint(64,255)) 

    # write text
    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())

    # # 写干扰点
    # for i in range(40):
    #     draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
    #
    # # 写干扰圆圈
    # 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())
    # 
    # # Videos interference line 
    # for I in Range (. 5): 
    # the random.randint X1 = (0, width) 
    # the random.randint Y1 = (0, height) 
    # the random.randint X2 = (0, width) 
    # Y2 the random.randint = (0, height) 
    # 
    # draw.line ((X1, Y1, X2, Y2), rndColor Fill = ()) 

    IMG = img.filter (ImageFilter.EDGE_ENHANCE_MORE) 
    return IMG, '' .join (code ) 


IF the __name__ == '__main__': 
    # 1. # open directly 
    # IMG, check_code code = () 
    # img.show () 
    # Print (code) 

    # 2. written to the file 
    # IMG, check_code code = () 
    # with Open ( 'code.png', 'WB') AS F: 
    # img.save (F, the format = 'PNG') 

    # 3. write memory (Python3)
    # from io import BytesIO
    # stream = BytesIO()
    # img.save(stream, 'png')
    # stream.getvalue()

    # 4. 写入内存（Python2）
    # import StringIO
    # stream = StringIO.StringIO()
    # img.save(stream, 'png')
    # stream.getvalue()
    pass