app.py

import tiktoken
import openai
import os
import gradio as gr

openai.api_key = os.environ.get("OPENAI_API_KEY")
encoding = tiktoken.get_encoding("cl100k_base")

def generate_prompt(prompt: str, style: str) -> str:
  if len(prompt) == 0:
    return "请输入您的提示语"
  
  generated_prompt = '以“' + prompt + '”为主题，撰写一段' + style + '，字数在100字左右'
  print('功能：' + style + '，generated_prompt：' + generated_prompt)
  
  return generated_prompt

def text_generation(original_prompt: str, generated_prompt: str, style: str) -> str:
  if not len(generated_prompt) == 0:
    prompt = generated_prompt
  elif not len(original_prompt) == 0:
    prompt = original_prompt
  else:
    return "请输入您的提示语"
  
  print('功能：' + style + '，提示语：' + prompt)
  
  if len(encoding.encode(prompt)) > 512:
    return "您的提示语过长，请精简后再试"

  response = openai.ChatCompletion.create(
    model="gpt-3.5-turbo", #gpt-4, gpt-3.5-turbo, text-embedding-ada-002
    messages=[{"role": "user", "content": prompt}],
    temperature=0.5,
    max_tokens=3580,
    top_p=1)
    
  result = '按照您的提示语：' + prompt + '，生成的文案如下：\n\n' + response["choices"][0]["message"]["content"]
    
  print(result)

  return result


css_style = "#fixed_size_img {height: 240px;} "


title = "文案创作 by宁侠"
description = '''
本服务的主要应用场景涵盖多种文案输入生成和续写，例如用户可以自行输入各种内容，之后服务将会对其进行回答、续写或者按照指令进行回复。
'''

with gr.Blocks(title=title, css=css_style) as demo:
    gr.HTML('''
      <div style="text-align: center; max-width: 720px; margin: 0 auto;">
                  <div
                    style="
                      display: inline-flex;
                      align-items: center;
                      gap: 0.8rem;
                      font-size: 1.75rem;
                    "
                  >
                    <h1 style="font-family: PingFangSC; font-weight: 500; line-height: 1.5em; font-size: 32px; margin-bottom: 7px;">
                      文案创作
                    </h1>
                    <h1 style="font-family: PingFangSC; font-weight: 500; line-height: 1.5em; font-size: 16px; margin-bottom: 7px;">
                      by宁侠
                    </h1>
                  </div>
                </div>
      ''')

    gr.Markdown(description)
    with gr.Row():
        radio_style = gr.Radio(label="功能选择", choices=["小红书笔记", "小红书标题", "公众号文案", "朋友圈微商文案", "商品卖点", "商品描述", "商品种草文案", "商品好评", "广告标题", "创意广告", "产品起名", "视频拍摄剧本", "短视频口播稿", "直播脚本", "短视频拍摄提纲", "SEO文章", "产品slogan", "夸夸文案", "诗词创作", "作文创作"], value="小红书笔记")
    with gr.Row():
        original_prompt = gr.Textbox(label="请输入您的提示语", value="探索西夏：沙漠风情与多元文化的西北之旅")
        rich_prompt = gr.Button("一键丰富提示语")
        generated_prompt = gr.Textbox(label="我们为您生成的提示语", value="以“探索西夏：沙漠风情与多元文化的西北之旅”为主题，撰写一段小红书笔记，字数在100字左右")
    with gr.Row():
        btn_submit = gr.Button(value="一键创作", elem_id="blue_btn")
        # btn_clear = gr.Button(value="清除")
    with gr.Row():
        text_output = gr.Textbox(label="生成文案")

    examples = gr.Examples(["探索西夏：沙漠风情与多元文化的西北之旅", "个性iPhone手机壳"], inputs=[original_prompt], outputs=generated_prompt)
    rich_prompt.click(generate_prompt, inputs=[original_prompt, radio_style], outputs=[generated_prompt])
    btn_submit.click(text_generation, inputs=[original_prompt, generated_prompt, radio_style], outputs=text_output)

demo.queue(api_open=False).launch(debug=True)