使用python的Pillow模块生成验证码

Posted in 2015-12-30 10:4 | Category: Python | Tags: pillow 验证码 python

参考资料
准备

from PIL import Image, ImageDraw, ImageFont, ImageFilter

_letter_cases = "abcdefghjkmnpqrstuvwxy" # 去除可能干扰的i,l,o,z
_upper_cases = _letter_cases.upper() # 大写字母
_numbers = ''.join(map(str, range(3, 10))) # 数字
init_chars = ''.join((_letter_cases, _upper_cases, _numbers))
fontType="/usr/share/fonts/TTF/DejaVuSans.ttf"

1.创建图像

def create_validate_code(self,size=(120, 30),
                        chars=init_chars,
                        img_type="PNG",
                        mode="RGB",
                        bg_color=(255, 255, 255),
                        fg_color=(0, 0, 255),
                        font_size=18,
                        font_type=fontType,
                        length=4,
                        draw_lines=True,
                        n_line=(1, 2),
                        draw_points=True,
                        point_chance = 2):

    width, height = size # 图像的宽,高
    img = Image.new(mode, size, bg_color) # 创建新图像
    img.save("validate.png", "PNG") # 存储图片
if __name__ == '__main__':
    create_validate_code()

2.绘制干扰线
在创建新图像后添加

if draw_lines:
    self.create_lines(draw,n_line,width,height) # 绘制干扰线

干扰线函数

def create_lines(self,draw,n_line,width,height):
    line_num = random.randint(n_line[0],n_line[1]) # 干扰线条数
    for i …