L1.1 pillow程序(帶有噪點的驗證碼圖片，封裝。干擾圓圈，隨機生成兩條直線。圖片添加字體。字符畫)

生成一張帶有噪點的驗證碼圖片

from PIL import Image, ImageDraw, ImageFont
import random

def getRandomColor():
   '''獲取一個隨機顏色(r, g, b)格式的'''
    c1 = random.randint(0, 255)
    c2 = random.randint(0, 255)
    c3 = random.randint(0, 255)
    return (c1, c2, c3)
    	
 def getRandomStr():
    '''獲取一個隨機字符串，每個字符的顏色也是隨機的'''
      random_num = str(random.randint(0, 9))
      random_low_alpha = chr(random.randint(97, 122))
      random_upper_alpha = chr(random.randint(65, 90))
      random_char = random.choice([random_num, random_low_alpha, random_upper_alpha])
      return random_char

# 獲取一個Image對象，參數分別是RGB模式。寬150，高30， 隨機顏色
image = Image.new('RGB', (150, 30), getRandomColor())
# 獲取一個畫筆對象，將圖片對象傳過去
draw = ImageDraw.Draw(image)
# 獲取一個font字體對象參數是ttf的字體的目錄。以及字體的大小
font = ImageFont.truetype('arial.ttf', size=26)

for i in range(5):
      # 循環5次，獲取5個隨機字符串
      random_char = getRandomStr()

      # 在圖片上一次寫入得到的隨機字符串，參數是：定位，字符串，顏色，字體
      draw.text((10 + i * 30, -2), random_char, getRandomColor(), font=font)
            
# 噪點噪線
# 劃線
width = 150
height = 30
for i in range(5):
     x1 = random.randint(0, width)
     x2 = random.randint(0, width)
     y1 = random.randint(0, height)
     y2 = random.randint(0, height)
     draw.line((x1, x2, y1, y2), fill=getRandomColor())

# 畫點
for i in range(self.point_count):
    draaw.point([random.randint(0, width), random.randint(0, height)], fill=getRandomColor())
    x = random.randint(0, width)
    y = random.randint(0, height)
    draw.arc((x, y, x + 4, y + 4), 0, 90, fill=getRandomColor())
# 保存到硬盤，名爲test.png格式的png圖片
image.save(open('test.png', 'wb'), 'png')

代碼效果如圖：

2.對驗證碼圖片生成進行封裝

from PIL import Image, ImageDraw, ImageFont
import random

class CodeImg:
    def __init__(self, width=150, height=30, code_count=5, font_size=32, point_count=20, line_count=3, img_format='png'):
        self.width = width
        self.height = height
        self.code_count = code_count
        self.font_size = font_size
        self.point_count = point_count
        self.line_count = line_count
        self.img_format = img_format   
    '''
    可以生成一個經過降噪後的隨機驗證碼的圖片
    code_count:驗證碼個數    point_count：噪點個數
    line_count:劃線個數      img_format:圖片格式
    return 生成的圖片的bytes類型的data 
    '''
    @staticmethod
    def getRandomColor():
    	'''獲取一個隨機顏色(r, g, b)格式的'''
    	c1 = random.randint(0, 255)
    	c2 = random.randint(0, 255)
    	c3 = random.randint(0, 255)
    	return (c1, c2, c3)
    	
    @staticmethod
    def getRandomStr():
    '''獲取一個隨機字符串，每個字符的顏色也是隨機的'''
        random_num = str(random.randint(0, 9))
        random_low_alpha = chr(random.randint(97, 122))
        random_upper_alpha = chr(random.randint(65, 90))
        random_char = random.choice([random_num, random_low_alpha, random_upper_alpha])
        return random_char

    def getCodeImg(self):
    # 獲取一個Image對象，參數分別是RGB模式。寬150，高30， 隨機顏色
        image = Image.new('RGB', (self.width, self.height), self.getRandomColor())
        # 獲取一個畫筆對象，將圖片對象傳過去
        draw = ImageDraw.Draw(image)
        # 獲取一個font字體對象參數是ttf的字體的目錄。以及字體的大小
        font = ImageFont.truetype('arial.ttf', size=self.font_size)

        temp = []
        for i in range(self.code_count):
            # 循環5次，獲取5個隨機字符串
            random_char = self.getRandomStr()

            # 在圖片上一次寫入得到的隨機字符串，參數是：定位，字符串，顏色，字體
            draw.text((10 + i * 30, -2), random_char, self.getRandomColor(), font=font)
            
            # 保存隨機字符，以供驗證用戶輸入的驗證碼是否正確使用
            temp.append(random_char)
        valid_str = ''.join(temp)

	# 噪點噪線
	# 劃線
	for i in range(self.line_count):
	    x1 = random.randint(0, self.width)
	    x2 = random.randint(0, self.width)
	    y1 = random.randint(0, self.height)
	    y2 = random.randint(0, self.height)
	    draw.line((x1, x2, y1, y2), fill=self.getRandomColor())

	# 畫點
	for i in range(self.point_count):
	    draaw.point([random.randint(0, self.width), random.randint(0, self.height)], fill=self.getRandomColor())
	    x = random.randint(0, self.width)
	    y = random.randint(0, self.height)
	    draw.arc((x, y, x + 4, y + 4), 0, 90, fill=self.getRandomColor())

	# 在內存生成圖片
	from io import BytesIO
	f = BytesIO()
	image.save(f, self.img_format)
	data = f.getvalue()
	f.close()
	return data, vaild_str

if __name__ == '__main__':
    img = CodeImg()
    data, vaild_str = img.getCodeImg()
    print(valid_str)

    f = open('text.png', 'wb')
    f.write(data)

代碼效果如圖：

干擾圓圈，隨機生成兩條直線

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

# 隨機數字
def rnd_char():
    return chr(random.randint(65, 90))
# 隨機顏色
def rnd_color():
    return random.randint(0, 245), random.randint(0, 245), random.randint(0, 245)
# 生成驗證碼和圖片
def generate_code(file_name="code"):
    width = 60 * 4
    height = 60
    image = Image.new('RGB', (width, height), (255, 255, 255))    
    # 創建Font對象
    font = ImageFont.truetype('arial.ttf', 36)
    # 創建Draw對象
    draw = ImageDraw.Draw(image)
    # 隨機生成兩條直線（一條貫穿上半部，一條貫穿下半部）
    draw.line((0, 0 + random.randint(0, height // 2), width, 0 + random.randint(0, height // 2)), fill=rnd_color())
    draw.line((0, height - random.randint(0, height // 2), width, height - random.randint(0, height // 2)), fill=rnd_color())
    # 輸出文字
    code_str = ''
    for t in range(4):
        tmp = rnd_char()
        draw.text((60 * t + 10, 10), tmp, font=font, fill=rnd_color())
        code_str += tmp
    #干擾點
    for i in range(40):
       draw.point([random.randint(0, width), random.randint(0, height)], fill=rnd_color())
    # 干擾圓圈
    for i in range(40):
       draw.point([random.randint(0, width), random.randint(0, height)], fill=rnd_color())
       x = random.randint(0, width)
       y = random.randint(0, height)
       draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rnd_color())
     # 扭曲
     image = image.transform((width + 20, height + 10), Image.AFFINE, (1, -0.3, 0, -0.1, 1, 0), Image.BILINEAR)
     # 模糊處理
     image = image.filter(ImageFilter.BLUR)
     image.save(file_name + '.png', 'png')
     return code_str, file_name
     
if __name__ == '__main__':
     for i in range(1):
         generate_code('code%d' % i)

代碼效果如圖：

4. 在圖片上添加字體

from PIL import Image, ImageDraw, ImageFont

# 指定要使用的字體和大小
font = ImageFont.truetype('simhei.ttf', 34)
# image:圖片  text:要添加的文本  font:字體
def add_text_to_image(image, text, font=font):
    rgba_image = image.convert('RGBA')
    tetx_overlay = Image.new('RGB', rgba_image.size, (255, 255, 255, 0))
    image_draw = ImageDraw.Draw(text_overlay)

    text_size_x, text_size_y = image_draw.tetxsize(text, font=font)
    # 設置文本文字位置
    print(rgba_image) 
    text_xy = (rgba_image.size[0] - text_size_x, rgba_image.size[1] - text_size_y)
   
    # 設置文本顏色和透明度
    image_draw.tetx(tetx_xy, text, font=font, fill=(76, 234, 124, 180))

    image_with_text = Image.alpha_composite(rgba_image, text_overlay)
    return image_with_text

im_before = Image.open("萌.png")
im_before.show()
im_after = add_text_to_image(im_before, '花花萌萌噠')  
im_after.show()
im_after.save('im_after.png')

代碼效果如圖：

5. 方法二：圖片添加字體

from PIL import Image, ImageDraw, ImageFont

# add_text
im = Image.open('萌.jpg')
im_to_draw = im.copy()
draw = ImageDraw.Draw(im_to_draw)
font = ImageFont.truetype('simhei.ttf', 40)

text = '華晨宇萌萌噠'
position_x, position_y = (20, 20)
color = (255, 0, 0)
draw.text((position_x, position_y), text, color, font=font)
im_to_draw.save('im_draw_font.jpg')
im_to_draw.show()

代碼效果如圖：

6.字符畫哆啦A夢

from PIL import Image
ascii_char = list('1 ')
def get_char(r, g, b, alpha=256):
    if alpha == 0:
        return ' '
    gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
    unit = 256 / len(ascii_char)
    return ascii_char[int(gray // unit)]
def maiin():
    im = Image.open('多.png')
    WIDTH, HEIGHT = 80, 48
    im = im.resize((WIDTH, HEIGHT))
    # im.resize(size, resample=0)  --調整大小
    text = ''
    for i in range(HEIGHT):
        for j in range(WIDTH):
            text += get_char(* im.getpixel((j, i)))
        txt += '\n'
    fo = open("哆啦A夢.txt", "w")
    fo.write(txt)
    fo.close()
main()

原圖效果：

代碼效果如圖：

L1.1 pillow程序(帶有噪點的驗證碼圖片，封裝。干擾圓圈，隨機生成兩條直線。圖片添加字體。字符畫)

L1.4.1 random模塊

L1.4.2 time時間處理

L1.4 os模塊基礎應用

L1.1 pillow程序(帶有噪點的驗證碼圖片，封裝。干擾圓圈，隨機生成兩條直線。圖片添加字體。字符畫)

L1.2 sqlite3數據庫(概念,基本原理; 數據庫圖像管理工具datagrip, database)

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

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