这里主要使用到的库是captcha库,下载的命令如下:
pip install captcha
验证码随机生成代码,(python 版本:3.6 captcha 版本:0.3)
from captcha.image import ImageCaptcha
import numpy as np
import matplotlib.pyplot as plt
from PIL import Image
import random
# CSDN author:智轩
# 链接:https://blog.csdn.net/bysjlwdx/
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']
def random_captcha_text(char_set=number+alphabet+ALPHABET, captcha_size=4):
'''
:param char_set: 验证码的候选集
:param captcha_size: 生成验证码中元素个数
:return: 返回随机挑选的captcha_size个元素组成的列表
'''
captcha_text = []
for i in range(captcha_size):
c = random.choice(char_set)
captcha_text.append(c)
return captcha_text
def gen_captcha_text_and_image():
'''
把 random_captcha_text() 函数所生成列表中的元素组成字符串,
传入到实例的方法中,生成对应的图片
:return: captcha_text为标签,captcha_image为图片
'''
image = ImageCaptcha()
captcha_text = random_captcha_text()
captcha_text = ''.join(captcha_text) # 把列表中的所有元素组成一个字符串
captcha = image.generate(captcha_text)
captcha_image = Image.open(captcha)
captcha_image = np.array(captcha_image)
return captcha_text, captcha_image
if __name__ == '__main__':
text, image = gen_captcha_text_and_image()
# 显示验证码图片
fig = plt.figure()
fig.text(0.1, 0.9, text, ha='center', va='center')
plt.imshow(image)
plt.show()