Python使用captcha库制作带参数输入验证码案例

python captcha_gen.py w=210 h=100 n=6 c=2 fontsize=[40,50,60]

pip install captcha
pip install pillow

#!/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()