這些文件放在新建的一個utils文件夾中：

自動生成驗證碼：

check_code.py:

"""
制造驗證碼
"""
import random
from PIL import Image, ImageDraw, ImageFont, ImageFilter

_letter_cases = "abcdefghjkmnpqrstuvwxy"  # 小寫字母，去除可能幹擾的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))


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: 是否劃幹擾線
    @param n_lines: 幹擾線的條數範圍，格式元組，默認為(1, 2)，只有draw_lines為True時有效
    @param draw_points: 是否畫幹擾點
    @param point_chance: 幹擾點出現的概率，大小範圍[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():
        """繪制幹擾線"""
        line_num = random.randint(*n_line)  # 幹擾線條數

        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():
        """繪制幹擾點"""
        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)  # 每個字符前後以空格隔開

        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

網頁分頁功能的pagination.py文件：

from django.utils.safestring import mark_safe


class Pagination(object):
    """
    分頁
    """

    def __init__(self, current_page, data_count, per_page_count=10, pager_num=7):
        try:
            self.current_page = int(current_page)
        except Exception as e:
            self.current_page = 1
        self.data_count = data_count
        self.per_page_count = per_page_count
        self.pager_num = pager_num

    @property
    def start(self):
        return (self.current_page - 1) * self.per_page_count

    @property
    def end(self):
        return self.current_page * self.per_page_count

    @property
    def total_count(self):
        v, y = divmod(self.data_count, self.per_page_count)
        if y:
            v += 1
        return v

    def page_str(self, base_url):
        page_list = []

        if self.total_count < self.pager_num:
            start_index = 1
            end_index = self.total_count + 1
        else:
            if self.current_page <= (self.pager_num + 1) / 2:
                start_index = 1
                end_index = self.pager_num + 1
            else:
                start_index = self.current_page - (self.pager_num - 1) / 2
                end_index = self.current_page + (self.pager_num + 1) / 2
                if (self.current_page + (self.pager_num - 1) / 2) > self.total_count:
                    end_index = self.total_count + 1
                    start_index = self.total_count - self.pager_num + 1

        if self.current_page == 1:
            prev = ‘<li><a class="page" href="javascript:void(0);">上一頁</a></li>‘
        else:
            prev = ‘<li><a class="page" href="%s?p=%s">上一頁</a></li>‘ % (base_url, self.current_page - 1,)
        page_list.append(prev)

        for i in range(int(start_index), int(end_index)):
            if i == self.current_page:
                temp = ‘<li class="active"><a class="page active" href="%s?p=%s">%s</a></li>‘ % (base_url, i, i)
            else:
                temp = ‘<li><a class="page" href="%s?p=%s">%s</a></li>‘ % (base_url, i, i)
            page_list.append(temp)

        if self.current_page == self.total_count:
            nex = ‘<li><a class="page" href="javascript:void(0);">下一頁</a></li>‘
        else:
            nex = ‘<li><a class="page" href="%s?p=%s">下一頁</a></li>‘ % (base_url, self.current_page + 1,)
        page_list.append(nex)
        page_str = mark_safe("".join(page_list))

        return page_str

Python的Django框架完成一個完整的論壇（4.項目所需的其他py文件源碼）