How to Make a Captcha in Python

Captcha is becoming complex and impractical with time. Here is an example:

So, I dedicated myself to make my own captcha system that's more practical. At first, I needed some idea for the captcha, and here it is:

I used Python to build the captcha system. Here is the snippet:

import random, string
from PIL import Image, ImageDraw
import numpy as np

bomb = Image.open("bomb.png")

bomb = bomb.resize((round(bomb.size[0] * 0.5), round(bomb.size[1] * 0.5)))
bombMask = bomb.convert("L")

lock = Image.open("lock.png")
lock = lock.resize((round(lock.size[0] * 0.5), round(lock.size[1] * 0.5)))
lockMask = lock.convert("L")

def randomName():
    strData = string.ascii_letters + string.digits
    response = ''
    for x in range(16):
        response += random.choice(strData)

    return response

def buildCaptcha():
    bgColor = (random.randint(200, 255), random.randint(200, 255), random.randint(200, 255))
    img = Image.new('RGB', ((bomb.size[0]) * 5 + (40 * 6), bomb.size[1] + round(bomb.size[1] * 1.5)), color = bgColor)

    result = []
    posX = 40
    maxHeight = 0
    for x in range(5):
        num = random.randint(1, 2)

        rotateDeg = random.randint(0, 360)
        if (num == 1):
            result.append(0)
            thisImg = bomb.rotate(rotateDeg, expand=1)
            thisMask = bombMask.rotate(rotateDeg, expand=1)
        else:
            result.append(1)
            thisImg = lock.rotate(rotateDeg, expand=1)
            thisMask = lockMask.rotate(rotateDeg, expand=1)

        num = random.randint(1, 3)
        if (num == 2):
            thisImg = thisImg.transpose(Image.FLIP_LEFT_RIGHT)
        elif (num == 3):
            thisImg = thisImg.transpose(Image.FLIP_TOP_BOTTOM)

        thisImg = thisImg.convert('RGBA')
        data = np.array(thisImg)
        red, green, blue, alpha = data.T
        white_areas = (red == 255) & (blue == 0) & (green == 0)

        itemColor = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
        if (itemColor == bgColor):
            itemColor[0] = random.randint(0, 255)

        data[..., :-1][white_areas.T] = itemColor
        thisImg = Image.fromarray(data)

        img.paste(thisImg, (posX, 50), thisMask)
        posX += lock.size[1] + 40

    draw = ImageDraw.Draw(img) 
    for x in range(random.randint(50, 80)):
        draw.line((random.randint(0, img.size[0]),random.randint(0, img.size[1]), random.randint(0, img.size[0]), random.randint(0, img.size[1])), fill=bgColor,  width=random.randint(3, 5))
        
    for x in range(random.randint(50, 200)):
        dotX = random.randint(0, img.size[0])
        dotY = random.randint(0, img.size[1])
        diameter = random.randint(1, 10)

        draw.ellipse((dotX, dotY, dotX + diameter, dotY + diameter), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(100, 255)))

    for x in range(random.randint(15, 30)):
        draw.line((random.randint(0, img.size[0]) , random.randint(0, img.size[1]), random.randint(0, img.size[0]) + 20, random.randint(0, img.size[1])), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(100, 255)),  width=random.randint(1, 3))

    filename = randomName() + '.png'
    img.save('captcha/padlock/' + filename)
    file = open('answer.csv', 'a')
    file.writelines(' '.join(str(v) for v in result) + ',' + filename + '\n')