验证码

import random

from PIL import Image, ImageDraw, ImageFont, ImageFilter


def check_code(width=120, height=30, char_length=5, font_file='Monaco.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))
    # 生成随机数字
    # return str(random.randint(0, 9))

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

# 写文字
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())

# 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())

# 画干扰线
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. 直接打开
	img,code = check_code()
	print(code)

	# 2. 写入文件
	# img,code = check_code()
	with open('code.png','wb') as f:
		img.save(f,format='png')

	# 3. 写入内存(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()