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                >[success] # 生成庫代碼 ~~~ #!/usr/bin/env python # -*- coding:utf-8 -*- import random from PIL import Image, ImageDraw, ImageFont, ImageFilter _letter_cases = "abcdefghjkmnpqrstuvwxy" # 小寫字母,去除可能干擾的i,l,o,z _upper_cases = _letter_cases.upper() # 大寫字母 _numbers = ''.join(map(str, range(3, 10))) # 數字 init_chars = ''.join((_letter_cases, _upper_cases, _numbers)) # PIL def create_validate_code(size=(120, 30), chars=init_chars, img_type="GIF", mode="RGB", bg_color=(255, 255, 255), fg_color=(0, 0, 255), font_size=18, font_type="Monaco.ttf", length=4, draw_lines=True, n_line=(1, 2), draw_points=True, point_chance=2): """ @todo: 生成驗證碼圖片 @param size: 圖片的大小,格式(寬,高),默認為(120, 30) @param chars: 允許的字符集合,格式字符串 @param img_type: 圖片保存的格式,默認為GIF,可選的為GIF,JPEG,TIFF,PNG @param mode: 圖片模式,默認為RGB @param bg_color: 背景顏色,默認為白色 @param fg_color: 前景色,驗證碼字符顏色,默認為藍色#0000FF @param font_size: 驗證碼字體大小 @param font_type: 驗證碼字體,默認為 ae_AlArabiya.ttf @param length: 驗證碼字符個數 @param draw_lines: 是否劃干擾線 @param n_lines: 干擾線的條數范圍,格式元組,默認為(1, 2),只有draw_lines為True時有效 @param draw_points: 是否畫干擾點 @param point_chance: 干擾點出現的概率,大小范圍[0, 100] @return: [0]: PIL Image實例 @return: [1]: 驗證碼圖片中的字符串 """ width, height = size # 寬高 # 創建圖形 img = Image.new(mode, size, bg_color) draw = ImageDraw.Draw(img) # 創建畫筆 def get_chars(): """生成給定長度的字符串,返回列表格式""" return random.sample(chars, length) def create_lines(): """繪制干擾線""" line_num = random.randint(*n_line) # 干擾線條數 for i in range(line_num): # 起始點 begin = (random.randint(0, size[0]), random.randint(0, size[1])) # 結束點 end = (random.randint(0, size[0]), random.randint(0, size[1])) draw.line([begin, end], fill=(0, 0, 0)) def create_points(): """繪制干擾點""" chance = min(100, max(0, int(point_chance))) # 大小限制在[0, 100] for w in range(width): for h in range(height): tmp = random.randint(0, 100) if tmp > 100 - chance: draw.point((w, h), fill=(0, 0, 0)) def create_strs(): """繪制驗證碼字符""" c_chars = get_chars() strs = ' %s ' % ' '.join(c_chars) # 每個字符前后以空格隔開 font = ImageFont.truetype(font_type, font_size) font_width, font_height = font.getsize(strs) draw.text(((width - font_width) / 3, (height - font_height) / 3), strs, font=font, fill=fg_color) return ''.join(c_chars) if draw_lines: create_lines() if draw_points: create_points() strs = create_strs() # 圖形扭曲參數 params = [1 - float(random.randint(1, 2)) / 100, 0, 0, 0, 1 - float(random.randint(1, 10)) / 100, float(random.randint(1, 2)) / 500, 0.001, float(random.randint(1, 2)) / 500 ] img = img.transform(size, Image.PERSPECTIVE, params) # 創建扭曲 img = img.filter(ImageFilter.EDGE_ENHANCE_MORE) # 濾鏡,邊界加強(閾值更大) return img, strs ~~~
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