使用Python生成一张用于登陆验证的字符图片

from PIL import Image, ImageDraw, ImageFont, ImageFilter
import random
#定义一个生成随机字符的函数 ASII码表 48-57: 0-9 65-90: A-Z 97-122: a-z
def randChar():
    i = random.randint(0, 2)
    if i == 0:
        return chr(random.randint(65, 90))    #大写字符
    elif i == 1:
        return chr(random.randint(97, 122))   #小写字符
    else:
        return chr(random.randint(48,57))     #数字

#定义一个生成图片的颜色(颜色尽量浅，以免字符用户都看不清楚)
def randColor1():
    return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))
#再定义一个生成字体的颜色(颜色尽量深，在尽可能无法被机器识别的前提下，让用户看清楚)
def randColor2():
    return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))
#生成图片宽度
width = 60 * 8
#生成图片高度
height = 60
#创建image对象
image = Image.new('RGB', (width, height), (255, 255, 255))
#创建Font对象
font = ImageFont.truetype('arial.ttf', 36)
#创建Draw对象
draw = ImageDraw.Draw(image)

#画图
for x in range(width):
    for y in range(height):
        draw.point((x, y), fill = randColor1())   
#point两个参数 第一个是坐标(tuple) 第二个是颜色（C语言3个，横纵坐标算2个）

#加字
for t in range(8):
    draw.text((60 * t + random.randint(0, 9) * randomrandint(0,5), random.randint(0, 9)), randChar(), font = font, fill = randColor2())
#draw.text 4个参数 坐标 字符 字体 颜色
#第一个参数大量使用randint 尽可能使得字变得散

#添加模糊效果
image = image.filter(ImageFilter.BLUR)
image.save('code.jpg', 'jpeg')

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

def randChar():
    i = randint(0, 2)
    if i == 0:
        return chr(randint(65, 90))
    elif i == 1:
        return chr(randint(97, 122))
    else:
        return chr(randint(48,57))

def randColor1():
    return (randint(64, 255), randint(64, 255), randint(64, 255))

def randColor2():
    return (randint(32, 127), randint(32, 127), randint(32, 127))

width = 60 * 8

height = 60

image = Image.new('RGB', (width, height), (255, 255, 255))
font = ImageFont.truetype('arial.ttf', 36)
draw = ImageDraw.Draw(image)

for x in range(width):
    for y in range(height):
        draw.point((x, y), fill = randColor1())   

for t in range(8):
    draw.text((60 * t + randint(0, 9) * randint(0,5), randint(0, 9)), randChar(), font = font, fill = randColor2())

image = image.filter(ImageFilter.BLUR)
image.save('code.jpg', 'jpeg')