Python aptcha验证码
SimonLiu009 人气:0最近研究验证码识别,需要生成大量验证码,最方便的是使用captcha
库来生成验证码,网上代码仅仅使用默认设置,但是它还有很多参数可以设定,于是我又添加了一些参数,方便使用。
效果图
参数解析
在上述案例中,完整命令为
python captcha_gen.py w=210 h=100 n=6 c=2 fontsize=[40,50,60]
其中:
w=210
指定验证码图片宽度h=100
指定验证码图片高度n=6
指定验证码字符长度c=2
指定生成的验证码图片数量fontsize=[40,50,60]
指定验证码字体大小(单个字符的字体大小从中随机选取)
参数默认值都写在代码里了。
好像我是唯一一个使用这种方式输入captcha
参数的。
安装相关库
首先安装两个库:
pip install captcha pip install pillow
完整源码
#!/usr/bin/env python # -*- coding:utf-8 -*- # Use `pip install captcha` and `pip install pillow` to install dependencies ### from tkinter import font from captcha.image import ImageCaptcha from PIL import Image import random import time import os,sys,ast NUMBER = ['0','1','2','3','4','5','6','7','8','9'] alphabet = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'] ALPHABET = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'] ALL_CHAR_SET = NUMBER + alphabet + ALPHABET #最终生成的验证码数量 count = 10 #参数: 宽度、高度、字符长度、字体大小 img_width,img_height,labelno,fontsize = 200,100,4,[42, 50, 56] def mylist(x): if isinstance(x,(list,tuple)): return x else: return [x] def get_argv(): global img_width,img_height,labelno,fontsize,count if len(sys.argv) > 1: for i in range(1,len(sys.argv)): arg = sys.argv[i].split('=') if arg[0]=='w': img_width = int(arg[1]) if arg[0]=='h': img_height = int(arg[1]) if arg[0]=='n': labelno = int(arg[1]) if arg[0]=='c': count = int(arg[1]) if arg[0] == 'fontsize': # fontsize = mylist(int(arg[1])) fontsize = ast.literal_eval(arg[1]) print(f'img_width:{img_width}, img_height:{img_height}, labelno:{labelno},fonsize:{fontsize},filecount={count}') def random_captcha_text(): global labelno captcha_text = [] for i in range(labelno): c = random.choice(ALL_CHAR_SET) captcha_text.append(c) return ''.join(captcha_text) # 生成字符对应的验证码 def gen_captcha_text_and_image(): global img_width,img_height,fontsize image = ImageCaptcha(width=img_width,height=img_height,font_sizes=fontsize) captcha_text = random_captcha_text() # print('captcha_text:',captcha_text) captcha_image = Image.open(image.generate(captcha_text)) return captcha_text, captcha_image def main(): global img_width, img_height, count, labelno get_argv() # 保存路径 path = f'{img_width}x{img_height}_{labelno}chars' print('save path:',path) if not os.path.exists(path): os.makedirs(path) for i in range(count): now = str(int(time.time())) text, image = gen_captcha_text_and_image() filename = text+'_'+now+'.png' image.save(path + os.path.sep + filename) print('saved %d : %s' % (i+1,filename)) if __name__ == '__main__': main()
参考资料:
Python使用captcha制作验证码
加载全部内容