python3 生成网站验证码

一、关于验证码的一些知识：
    https://blog.csdn.net/mingzznet/article/details/51971037

二、不说了，直接上代码：
import base64
import random
import string
from io import BytesIO

from PIL import Image, ImageDraw, ImageFont
from music_store import settings

_FONT_PATH = settings.VERIFY_CODE_FONT_PATH # 这个是字体的存储路径，根据实际填写

# 产生随机字符（大小写字母或数字）
def rnd_char():
return random.choice(string.ascii_letters + string.digits)

# 产生随机颜色（颜色较浅，用于产生背景干扰颜色） 实际上这个对增加自动识别的难度几乎没有任何作用
def rnd_bg_color():
return random.randint(126, 255), random.randint(126, 255), random.randint(126, 255)

# 产生随机颜色（颜色较深，用于产生验证码字符颜色）
def rnd_ch_color():
return random.randint(10, 66), random.randint(10, 66), random.randint(10, 66)

# 产生随机字体 字体可以自己去网上下载，尽量不要太规范的字体
def rnd_font(min_size=28, max_size=34, rnd=True):
font_types = (_FONT_PATH + 'Pattaya-Regular.ttf', _FONT_PATH + 'Quicksand-Bold.ttf',
_FONT_PATH + 'RibeyeMarrow-Regular.ttf',)
font_type = font_types[random.randint(0, len(font_types) - 1)]
font_size = (max_size + min_size) >> 1
if rnd:
font_size = random.randint(min_size, max_size)
return ImageFont.truetype(font_type, font_size, encoding='utf-8')

# 产生验证码图片，返回产生的验证码
def create_verification(max_size=34, length=4):
left_space, top_space = int(max_size >> 1), int(max_size >> 2)
print('left space: {0}, top_space: {1}'.format(left_space, top_space))
width, height = max_size * length + left_space * 2, max_size + top_space # 图片的大小比验证码大小稍大
# 创建初始图片
img = Image.new('RGB', (width, height))
pixs = img.load()
draw = ImageDraw.Draw(img)
# 画背景颜色
for i in range(width):
for j in range(height):
pixs[i, j] = rnd_bg_color()
ret_code = ''
last_right = 0
# 画验证码 TODO: 字体小角度旋转没完成
for i in range(length):
code = rnd_char()
ret_code += code
font = rnd_font(min_size=max_size - 6, max_size=max_size, rnd=True)
font_width, font_height = font.getsize(code)
if i == 0:
last_right = left_space + ((max_size - font_width) >> 1) + font_width
draw.text((left_space + ((max_size - font_width) >> 1), top_space - random.randint(6, 12)),
code, fill=rnd_ch_color(), font=font)
else:
offset = random.randint(1, 6)
draw.text((last_right - offset, top_space - random.randint(6, 12)), code,
fill=rnd_ch_color(), font=font)
last_right += (font_width - offset)
# 画干扰线，很难看暂时不用
# for k in range(2):
# draw.line(((0, random.randint(2, max_size - 2)), (length * max_size, random.randint(0, max_size))),
# rnd_bg_color(), 1)
del draw
region = (0, 0, max(last_right + left_space, 100 + left_space), height)
# 裁切图片
crop_img = img.crop(region)
# 这里直接返回图片的data数据，符合网站验证码实际要求
buffered = BytesIO()
crop_img.save(buffered, format="JPEG")
return 'data:image/png;base64,' + base64.b64encode(buffered.getvalue()).decode(encoding="utf-8"), ret_code