Python 开发记录

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pip config set global.index-url https://mirrors.aliyun.com/pypi/simple
pip config set install.trusted-host mirrors.aliyun.com

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import traceback
from typing import List

from fastapi import UploadFile, File, Form
from config.setting import getDB
from sqlalchemy import select, update
from kbAdmin.Models import models
import os.path
import uuid
import shutil
import ast
import json
from util.ReturnDatas import ReturnDatas
import hashlib

STATICDIR= "./static/"
up_htmlImage = STATICDIR + "htmlimage"

"""
图片管理-上传图片
"""
@kb_router.post("/uploadImage")
async def uploadImage(file: UploadFile = File(...), documentId: str = Form(...)):
    try:
        # 根据文档id，查出picture的值
        with getDB() as db:
            s = select(models.Document).where(models.Document.id == documentId)
            result = db.scalars(s).first()

        # 获取文件的后缀
        file_extension = file.filename.split(".")[-1]

        # 计算文件的哈希值(保存文件后在删除，是为了获取文件的hash值)
        path = up_htmlImage + "/" + result.knowledgeBaseId + "/" + result.id
        os.makedirs(path, exist_ok=True)

        img_id = uuid.uuid4().hex
        temp_name = img_id + "." + file_extension
        await file.seek(0)  # 确保文件指针在开始位置
        # 写入文件到目标路径
        with open(path + "/" + temp_name, "wb") as buffer:
            shutil.copyfileobj(file.file, buffer)

        # 获取哈希
        hash_value = calculate_sha256(path + "/" + temp_name)

        # 将其哈希值当作文件名
        name = hash_value + "." + file_extension
        newFilename = os.path.join(path, name)
        if os.path.exists(newFilename):
            ##删除原文件
            os.remove(newFilename)
            os.rename(path + "/" + temp_name, path + "/" + name)
        else:
            os.rename(path + "/" + temp_name, path + "/" + name)

        # 组合新的picture的值
        pictureUrl = result.picture
        arr: List[str] = []
        if  pictureUrl == '' or pictureUrl is None:
            arr.append(name)
        else:
            arr = ast.literal_eval(pictureUrl)
            # 相同的文件，删除旧的，添加新的
            if name in arr:
                arr.remove(name)
            arr.append(name)

        # 保存图片
        # 目标目录路径
        target_directory = up_htmlImage + '/' + result.knowledgeBaseId + '/' + result.id
        # 确保目标目录存在
        os.makedirs(target_directory, exist_ok=True)

        # 目标文件路径
        target_file_path = os.path.join(target_directory, name)

        # 相同的文件，删除旧的，添加新的
        if os.path.exists(target_file_path):
            ##删除原文件
            os.remove(target_file_path)

        await file.seek(0)  # 确保文件指针在开始位置
        # 写入文件到目标路径
        with open(target_file_path, "wb") as buffer:
            shutil.copyfileobj(file.file, buffer)

        # 更新picture信息
        with getDB() as db:
            uptesSql = (update(models.Document).where(models.Document.id == documentId).values(picture=json.dumps(arr)))
            print(uptesSql)
            updateResult = db.execute(uptesSql)
            db.commit()

            # 获取受影响的行数
            if updateResult.rowcount > 0:
                return ReturnDatas().SuccessResponse(message="上传成功 !!!! ")
            else:
                return ReturnDatas.ErrorResponse(message="上传失败")

    except Exception as e:
        traceback.print_exc()


"""根据文件路径求取哈希值"""
def calculate_sha256(file_path):
    uploaded_hash = hashlib.sha256()
    with open(file_path, "rb") as file:
        chunk = file.read(8192)
        while chunk:
            uploaded_hash.update(chunk)
            chunk = file.read(8192)

    uploaded_hash_value = uploaded_hash.hexdigest()
    return uploaded_hash_value

"""根据文件内容求取哈希值"""
async def calculate_file_hash(file):
    hasher = hashlib.sha256()
    await file.seek(0)  # 确保文件指针在开始位置

    while True:
        chunk = await file.read(8192)
        if not chunk:  # 当 chunk 为空字节串（即文件读取完毕）时，退出循环
            break
        hasher.update(chunk)

    await file.seek(0)  # 重置文件指针到开始位置，以便后续操作
    return hasher.hexdigest()

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pip install pandas openpyxl

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async def uploadQA(file: UploadFile = File(...), kbId: str = Form(...)):
    # 读取上传的文件
    contents = await file.read()
    # 将文件内容加载到 pandas DataFrame
    df = pd.read_excel(BytesIO(contents))
    # 标题
    title_row = df.columns
    question = title_row[0]
    answer = title_row[1]

    # 处理数据
    # 选取DataFrame df 中从第0行开始到最后的所有行
    data_df = df.iloc[0:]
    combined_data = []
    for index, row in data_df.iterrows():
        # 拼接第一列和第二列的数据
        combined_value = f"{question}:{row[0]}。{answer}:{row[1]}"
        combined_data.append(combined_value)
    print(combined_data)

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['问题:你今天吃了什么。答案:我还不饿', '问题:天气晴朗吗。答案:还不错哦', '问题:你好呀。答案:嗯，你好']

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@kb_router.post("/uploadQA")
async def uploadQA(file: UploadFile = File(...), kbId: str = Form(...)):
    # 读取上传的文件
    contents = await file.read()
    # 将文件内容加载到 pandas DataFrame
    df = pd.read_excel(BytesIO(contents))
    # 标题
    title_row = df.columns
    question = title_row[0]
    answer = title_row[1]

    # 处理数据
    data_df = df.iloc[0:]
    combined_data = []
    for index, row in data_df.iterrows():
        # 拼接第一列和第二列的数据
        combined_value = f"{question}:{row[0]}。{answer}:{row[1]}"
        combined_data.append(combined_value)

    if len(combined_data) == 0:
        return ReturnDatas.ErrorResponse(message="请填写内容 !!")

    try:
        for item in combined_data:
            file = io.BytesIO(item.encode())
            # 创建 UploadFile 对象
            upFile = UploadFile(filename=uuid.uuid4().hex + ".txt", file=file)
            # 调用其他操作
            await uploadCommodityInfo(upFile, kbId)
    except  Exception as e:
        traceback.print_exc()
        return ReturnDatas().ErrorResponse(message={"error": f"An error occurred: {str(e)}"})

    return ReturnDatas().SuccessResponse(message="上传成功 !!!! ")

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df = pd.read_excel(BytesIO(contents))
print(df)

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        问题    答案
0  你今天吃了什么  我还不饿
1    天气晴朗吗  还不错哦
2      你好呀  嗯，你好

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df = pd.read_excel(BytesIO(contents), header=None)
print(df)

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import pandas as pd

df = pd.read_excel("data_test.xlsx")

print("\n(1)全部数据：")
print(df.values)

print("\n(2)第2行第3列的值：")
print(df.values[1,2])

print("\n(3)第3行数据：")
print(df.values[2])

print("\n(4)获取第2、3行数据：")
print(df.values[[1,2]])

print("\n(5)第2列数据：")
print(df.values[:,1])

print("\n(6)第2、3列数据：")
print(df.values[:,[1,2]])

print("\n(7)第2至4行、第3至5列数据：")
print(df.values[1:4,2:5])

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import pandas as pd

df = pd.read_excel("data_test.xlsx")

print("\n(1)全部数据：")
print(df.iloc[:,:].values)

print("\n(2)第2行第3列的值：")
print(df.iloc[1,2])

print("\n(3)第3行数据：")
print(df.iloc[2].values)

print("\n(4)第2列数据：")
print(df.iloc[:,1].values)

print("\n(5)第6行的姓名：")
print(df.loc[5,"姓名"])

print("\n(6)第2至3行、第3至4列数据：")
print(df.iloc[1:3,2:4].values)

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import random
from PIL import Image, ImageDraw, ImageFont

'''
生成验证码
'''
def generate_code(length):
    # 随机选择字符
    characters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    # 生成指定长度的验证码
    code = ''.join(random.choice(characters) for i in range(length))
    return code

'''
生成验证码图片
'''
def generate_image(code, width, height, font_size):
    # 创建一个新的图片对象
    img = Image.new(mode='RGB', size=(width, height), color=(255, 255, 255))
    # 创建一个画笔对象
    draw = ImageDraw.Draw(img)
    # 设置字体
    font = ImageFont.truetype('arial.ttf', font_size)
    # 获取字符的宽度和高度
    # text_width, text_height = draw.textsize(code, font)
    # 获取字符的宽度和高度
    bbox = draw.textbbox((0, 0, width, height), code, font=font)
    text_width = bbox[2] - bbox[0]
    text_height = bbox[3] - bbox[1]

    # 将字符绘制在图片中央
    x = (width - text_width) // 2
    y = (height - text_height) // 2
    draw.text((x, y), code, font=font, fill=(0, 0, 0))
    # 添加干扰线
    for i in range(5):
        x1 = random.randint(0, width)
        y1 = random.randint(0, height)
        x2 = random.randint(0, width)
        y2 = random.randint(0, height)
        draw.line((x1, y1, x2, y2), fill=(0, 0, 0), width=2)
    # 添加干扰点
    for i in range(50):
        x = random.randint(0, width)
        y = random.randint(0, height)
        draw.point((x, y), fill=(0, 0, 0))
    # 返回验证码图片对象
    return img

'''
保存验证码图片
'''
def save_image(img, path):
    img.save(path)

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if __name__ == '__main__':
    code = generate_code(4)
    img = generate_image(code, 150, 50, 30)
    save_image(img, 'captcha.png')
    img.show()

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'''
生成验证码
'''
@user_router.post("/verificationCode")
def verificationCode(request: Request):
    code = VerificationCodeUtil.generate_code(4)
    img = VerificationCodeUtil.generate_image(code, 110, 40, 30)

    # 将验证码存储到会话中
    request.session['verification_code'] = code

    print("验证码" + code)

    buffer=BytesIO()
    img.save(buffer,"PNG")
    # 从内存中取出bytes类型的图片
    buf_bytes = buffer.getvalue()

    # 将图片转换为 base64 编码
    base64_image = base64.b64encode(buf_bytes).decode('utf-8')

    return ReturnDatas.SuccessResponse(message="获取成功", data=base64_image)

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<template>
  <el-form-item class="login-form-pwd" label="验证码" prop="code">
    <el-input
      type="code"
      size="large"
      placeholder="请输入验证码"
      v-model="form.code"
      style="flex: 1;"
    ></el-input>
    <img :src="imageUrl" alt="验证码" @click="getCode()" title="点击刷线验证码"/>
  </el-form-item>
</template>
<script>
export default {
  setup() {
    const imageUrl = ref('')

    //获取验证码
    const getCode = () => { 
      landRelevant.verificationCode().then((res) => { 
        // 更新 Vue 组件中的图片 URL
        imageUrl.value = 'data:image/png;base64,'+res.data;
      })
    }
  }
}
</script>

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code = request.session.get('verification_code')
if code != uservo.code:
    return ReturnDatas.ErrorResponse(message="验证码错误,请重试!失败")

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from starlette.middleware.sessions import SessionMiddleware
import os

app.add_middleware(SessionMiddleware, secret_key=os.urandom(24))

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import unittest

class TestSample(unittest.TestCase):

	def test_lowercase_and_strip(self):
    # normalizeString 是自定义的方法
		self.assertEqual(normalizeString(" Hello World "), "hello world")
		external_method()

def external_method():
    print("测试")

if __name__ == '__main__':
	# 跑所有以 test_xx 开头的测试用例
    unittest.main()

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from starlette.responses import FileResponse

@kb_router.get("/downloadTemplate")
async def downloadQATemplate():
    file_name = "模板.xlsx"
    file_path = STATICDIR + 'template/' + file_name
    return FileResponse(file_path, filename=file_name, media_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')

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@userKB_router.post("/userKBList")
async def userKBList(page: Page):
    try:
        # 查询普通用户信息
        with getDB() as db:
            # 查询总记录数
            pageRes = db.execute(text(f" SELECT COUNT(*) as count FROM t_user where \"userType\" = 0 and (active != 0 or active is null)")).mappings().fetchone()
            # 设置分页大小
            page = page.setPageCount(pageRes["count"])      
            dbSql = db.query(User)
            dbSql = dbSql.filter(User.userType == 0)
            dbSql = dbSql.filter(or_(User.active != 0,User.active.is_(None)))
            dbSql = dbSql.order_by(desc(User.updateTime))       
            # 查询列表
            result = dbSql.offset((page.pageNo - 1) * page.pageSize).limit(page.pageSize).all()     
            # 查询用户的知识库信息
            results = []
            with getDB() as db:
                for u in result:
                    user_id = u.id
                    s = select(KnowledgeBase.id, KnowledgeBase.name, KnowledgeBase.created_at,
                           KnowledgeBase.type).where(KnowledgeBase.userId == user_id).order_by(desc(KnowledgeBase.update_at))
                    kbList = db.execute(s).all()

                    # 组合数据返回
                    user_dict = u.__dict__.copy()  # 将 User 实体转换为字典
                    # if kbList:
                    user_dict["knowledgeBase"] = [kb._asdict() for kb in kbList]  # 将知识库列表添加到用户字典中
                    results.append(user_dict)

    except Exception as e:
        traceback.print_exc()
        return ReturnDatas().ErrorResponse(message="查询失败 ! ")

    return ReturnDatas().SuccessResponse(message="查询成功", data=jsonable_encoder(results), page=jsonable_encoder(page))

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@permission_router.post("/bindPeopleList")
async def bindPeopleList(page: Page.Page, request: Request):
    try:
        jwt = request.headers.get("jwttoken")
        currentUserId = SessionUser.getUserId(jwt)

        account = page.data["account"]
        with getDB() as db:
            if account != '':
                # 查询总记录数
                pageRes = db.execute(text(f""" SELECT COUNT(*) as count FROM user_permission where "userId" = :userId and "bindUserId" like :bindUserId and "status" = :status"""),{"userId":currentUserId, "bindUserId":account, "status": '1'}).mappings().fetchone()
            else:
                pageRes = db.execute(text(f""" SELECT COUNT(*) as count FROM user_permission where "userId" = :userId and "status" = :status"""),{"userId":currentUserId, "status": '1'}).mappings().fetchone()

            # 设置分页大小
            page = page.setPageCount(pageRes["count"])

            # 构建查询
            dbSql = db.query(UserPermission, User.account). \
                join(User, UserPermission.bindUserId == User.id). \
                filter(UserPermission.userId == currentUserId). \
                filter(UserPermission.status == '1'). \
                order_by(desc(UserPermission.create_at))

            if account != '':
                dbSql = dbSql.filter(User.account.like(f'%{account}%'))

            # 查询列表
            result = dbSql.offset((page.pageNo - 1) * page.pageSize).limit(page.pageSize).all()

            for idx, item in enumerate(result):
                user_permission, user_account = item
                print(f"第 {idx + 1} 条记录:")
                print(f"UserPermission: {user_permission.__dict__}")
                print(f"UserAccount: {user_account}\n")

            # 将查询结果转换为字典
            result_dicts = [
                {
                    "id": user_permission.id,
                    "userId": user_permission.userId,
                    "bindUserId": user_permission.bindUserId,
                    "create_at": user_permission.create_at,
                    "account": account
                }
                for user_permission, account in result
            ]


        return ReturnDatas().SuccessResponse(message = "查询成功", data = jsonable_encoder(result_dicts), page = jsonable_encoder(page))
    except Exception as e:
        traceback.print_exc()
        return ReturnDatas().ErrorResponse(message = "查询失败")

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from sqlalchemy import select, desc
from your_module import WeExternal, getDB  # 替换为你的实际导入路径

with getDB() as db:
    s = select(WeExternal).where(WeExternal.open_kfid == wev.open_kfid).order_by(desc(WeExternal.update_at)).order_by(desc(WeExternal.created_at))
    WeExternalList = db.scalars(s).all()
    
    # 获取最后一条数据
    last_we_external = WeExternalList[-1] if WeExternalList else None

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with getDB() as db:
    s = select(ChatRecod).where(ChatRecod.chat_room_id == roomId).order_by(asc(ChatRecod.update_at),asc(ChatRecod.role != 'user'))
    chatRecordList = db.scalars(s).all()

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async def getChatRecord(page: Page):
    try:
        # 组合roomId
        roomId = page.data["agentsId"] + page.data["open_kfid"] + page.data["external_userid"]
        with (getDB() as db):
            pageRes = db.execute(
                text(f" SELECT COUNT(*) as count FROM chat_recod where chat_room_id = :chat_room_id"),
                {"chat_room_id": roomId}).mappings().fetchone()
            # 设置分页大小
            page = page.setPageCount(pageRes["count"])

            s = select(ChatRecod).where(ChatRecod.chat_room_id == roomId).order_by(desc(ChatRecod.update_at),asc(ChatRecod.role != 'user')).offset((page.pageNo - 1) * page.pageSize).limit(page.pageSize)
            chatRecordList = db.scalars(s).all()
            chatRecordList.sort(key=lambda x: (x.update_at, x.role != 'user'))

        return ReturnDatas().SuccessResponse(message="查询成功", data=jsonable_encoder(chatRecordList), page=jsonable_encoder(page))
    except  Exception as e:
        traceback.print_exc()
    return ReturnDatas.ErrorResponse(message="查询失败!!")

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from fastapi import UploadFile

async def test():
  title = "标题"
  content = "这是一段文字"
  file = io.BytesIO(content.encode())
  # 创建 UploadFile 对象
  upFile = UploadFile(filename=title + ".txt", file=file)

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pageRes = db.execute(text(f""" SELECT COUNT(*) as count FROM user_permission up join t_user u on up."bindUserId" = u."id" where up."userId" = :userId and u."account" like :account and up."status" = :status"""),{"userId":currentUserId, "account":f"%{account}%", "status": '1'}).mappings().fetchone()

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dbSql = db.query(UserPermission, User.account). \
    join(User, UserPermission.bindUserId == User.id). \
    filter(UserPermission.userId == currentUserId). \
    filter(UserPermission.status == '1'). \
    order_by(desc(UserPermission.create_at))

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up_filePath = "./static/" + "knowledgeBase"
up_graphPath = "./static/" + "knowledgeGraph"

async def uploadfile(background_tasks: BackgroundTasks,file: UploadFile = File(...), kbId: str = Form(...),upType:str=Form(default="kowbase_up")):
    # 检查是否有文件被上传
    try:
        if kbId is None :
            return ReturnDatas().ErrorResponse(message="知识库不存在!")
        with getDB() as db:
            s=select(models.KnowledgeBase).where(models.KnowledgeBase.id==kbId)
            kn=db.scalars(s).first()
        name=kn.id
        knowPath=None
        path=None
        tempPath=None
        if upType == "kowbase_up":
            knowPath=up_filePath
            path = knowPath + "/" + name

            # 创建临时目录
            tempPath=os.path.join(path,"temp")

        elif upType == "knowGrapth_up":
            knowPath=up_graphPath + "/" + name
            path=os.path.join(knowPath,"input")
            # 创建临时目录
            tempPath=os.path.join(path, "temp")

        if not os.path.exists(knowPath):
            os.makedirs(knowPath)

        if not os.path.exists(path):
            os.makedirs(path)

        if not os.path.exists(tempPath):
            os.makedirs(tempPath)

        #创建临时目录 并存入文件
        temp = NamedTemporaryFile(dir=tempPath)
        content = await file.read()
        temp.write(content)

        #更新数据库数据
        # 新插入数据
        docId = uuid.uuid4().hex
        print("temp",temp)
        with getDB() as db:

            doc_data = {
                "id": docId,
                "knowledgeBaseId": kbId,
                "path": os.path.join(path, temp.name),
                "status": 0,
                "fileName": file.filename,
                "fileSize": file.size,
                "createTime": datetime.now(),
                "updateTime": datetime.now(),
                "type": 1
            }
            k = models.Document(**doc_data)
            db.add(k)
            db.commit()

        background_tasks.add_task(upFile, file, path, kbId, upType, temp, docId)

        # 返回成功消息或其他响应
        result={"id":docId,"object":"file","bytes":temp.tell(),"created_at":int(round(time.time() * 1000)),"filename":file.filename,"purpose":"fine-tune"}
        return ReturnDatas.SuccessResponse(message="File uploaded successfully!",data=jsonable_encoder(result))

    except Exception as e:
        ##logging.error(e)
        traceback.print_exc()

        # 处理异常情况
        return ReturnDatas.ErrorResponse(message={"error": f"An error occurred: {str(e)}"})

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def upFile(file, path, kbId, upType, temp:TemporaryFile, docId):
    try:
        # 检查是否有文件被上传
        if file.filename == '':
            return ReturnDatas.ErrorResponse(message="No file provided!")
        # 计算上传文件的哈希值
        hash_value = hash_file_tempFile(temp)
        # 将其哈希值当作文件名
        file_extension = file.filename.split(".")[-1]
        name = hash_value + "." + file_extension
        # 判断上传的文件是否存在，其文件名就是其内容的哈希值，比较的是哈希值的文件名称,如果存在，表示其哈希值一样
        newPath = os.path.join(path, name)

        if os.path.exists(newPath):
            ##删除原文件
            os.remove(newPath)
        temp.seek(0)    # 确保文件指针在开始位置
        filePath = os.path.join(path, name)

        with open(filePath, "wb") as buffer:
            shutil.copyfileobj(temp.file, buffer)
        filename = path + "/" + name

        # 仅提取文本内容
        full_text = ""

        # ......
        # 更新上传文件的状态
        return None

    except Exception as e:
        traceback.print_exc()
        # 更新上传文件的状态

    finally:
        # 删除临时文件
        temp.close()


def hash_file_tempFile(file:TemporaryFile):
    hasher = hashlib.sha256()
    # 使用 file.file 来访问文件流
    file_content = file.file
    file_content.seek(0)  # 确保文件指针在开始位置
    while True:
        chunk = file_content.read(8192)
        if not chunk:  # 当 chunk 为空字节串（即文件读取完毕）时，退出循环
            break
        hasher.update(chunk)

    file_content.seek(0)  # 重置文件指针到开始位置，以便后续操作
    return hasher.hexdigest()

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from markitdown import MarkItDown
from openai import OpenAI
# 初始化转换器
client = OpenAI(api_key="", base_url="")

markitdown = MarkItDown(llm_client=client, llm_model="")
mdImage = MarkItDown(llm_client=client, llm_model="")

# 转换不同类型的文件
result = markitdown.convert("xxx.pdf",llm_prompt="提取图面内容,总结描述使用中文")
print(result.text_content)

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# 更换镜像
pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
# 安装
pip install pdfminer.six pymupdf

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