pillow

pip3 install pillow

创建图片

  1. from PIL import Image
  2. # 创建一张大小为120x30px的图片背景颜色为白色
  3. img = Image.new(mode='RGB', size=(120,30), color=(255,255,255)) 
  5. # 在图片查看器中打开
  6. img.show()
  8. # 保存图片到本地
  9. with open('code.png', 'wb') as f:
  10.     img.save(f, format='png')

画笔

用于在图片上画任意的内容

  1. # 创建画笔
  2. img = Image.new(mode='RGB', size=(200,200), color=(255,255,255))
  3. draw = ImageDraw.Draw(img, mode='RGB')
  5. # 画点
  6. # param1: 坐标
  7. # param2: 颜色
  8. draw.point([10, 10], fill="red")
  9. draw.point([20, 10], fill=(0, 255, 255))
  11. # 画线
  12. # param1: 0,0 起始坐标 40,30结束坐标
  13. draw.line((0,0,40,30), fill=(255, 0, 0))
  15. # 画圆
  16. # param1: 起始坐标和结束坐标（圆要在期中间）
  17. # param2: 开始角度
  18. # param3: 结束角度
  19. draw.arc((50,50,100,100), 0, 90, fill=(255, 0, 0))
  21. # 写文本
  22. # param1: 起始坐标
  23. # param2：写入内容
  24. # param3：颜色
  25. draw.text([0,0], 'python', (255, 0, 0))
  27. # 特殊字体文字
  28. # param1: 字体文件路径
  29. # param2: 字体大小
  30. font = ImageFont.truetype("kumo.ttf", 28)
  32. draw.text([0,0], 'python', (255,0,0), font=font)

图片验证码

  1.     def rm_check_code(request):
  2.     from io import BytesIO
  3.     from utils.random_check_code import check_code
  5.     f = BytesIO()
  6.     img, code = rd_check_code()
  7.     img.save(f, 'png')
  8.     data = f.getvalue()
  9.     request.session['code'] = code
  10.     return HttpResponse(data)
  1. import random
  2. from PIL import Image, ImageDraw, ImageFont, ImageFilter
  5. def check_code(width=120, height=30, char_length=5, font_file='kumo.ttf', font_size=28):
  6.     code = []
  7.     img = Image.new(mode='RGB', size=(width, height), color=(255, 255, 255))
  8.     draw = ImageDraw.Draw(img, mode='RGB')
  10.     def rndChar():
  11.         """
  12.         生成随机字母
  13.         :return:
  14.         """
  15.         return chr(random.randint(65, 90))
  17.     def rndColor():
  18.         """
  19.         生成随机颜色
  20.         :return:
  21.         """
  22.         return (random.randint(0, 255), random.randint(10, 255), random.randint(64, 255))
  24.     # 写文字
  25.     font = ImageFont.truetype(font_file, font_size)
  26.     for i in range(char_length):
  27.         char = rndChar()
  28.         code.append(char)
  29.         h = random.randint(0, 4)
  30.         draw.text([i * width / char_length, h], char, font=font, fill=rndColor())
  32.     # 写干扰点
  33.     for i in range(40):
  34.         draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
  36.     # 写干扰圆圈
  37.     for i in range(40):
  38.         draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
  39.         x = random.randint(0, width)
  40.         y = random.randint(0, height)
  41.         draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor())
  43.     # 画干扰线
  44.     for i in range(5):
  45.         x1 = random.randint(0, width)
  46.         y1 = random.randint(0, height)
  47.         x2 = random.randint(0, width)
  48.         y2 = random.randint(0, height)
  50.         draw.line((x1, y1, x2, y2), fill=rndColor())
  52.     img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)
  53.     return img, ''.join(code)