【python小练】0010

第 0010 题：使用 Python 生成类似于下图中的字母验证码图片

思路：

1. 随机生成字符串

2. 创建画布往上头写字符串

3. 干扰画面

code:

# codeing: utf-8

from PIL import Image, ImageDraw, ImageFont, ImageFilter
import string
import random

def get4char():
    return [random.choice(string.ascii_letters) for _ in range(4)]  # 可以把‘_’换做任意字母，‘_’说明后续不用

def getcolor():
    return random.randint(30, 100), random.randint(30, 100), random.randint(30, 100)

def getpicture():
    width = 240
    height = 60

    image = Image.new(‘RGB‘, (width, height), (180, 180, 180))
    font = ImageFont.truetype(‘arial.ttf‘, 40)

    draw = ImageDraw.Draw(image)
    code = get4char()
    for ch in range(4):
        draw.text((60 * ch,30), code[ch], font=font, fill=getcolor())

    for _ in range(random.randint(1500, 3000)):
        draw.point((random.randint(0, width), random.randint(0, height)), fill=getcolor())

    image = image.filter(ImageFilter.BLUR)
    image.save("".join(code) + ‘.jpg‘)

getpicture()

Notes:

1. string.ascii_letters，大小写英文字母集合字符串

2. random.choice()：Return a random element from the non-empty sequence seq. If seq is empty, raises IndexError.

3. random.randint()：Return a random integer N such that a <= N <= b. Alias for randrange(a, b+1).

4. image.new(‘RGB‘, (w,h), (r,g,b))

result:

我觉得自己应该去把tutorial从头到尾先看一遍= - =

下一篇写怎么识别验证码咯。