展示HN：Func-to-web – 将Python函数转化为零样板代码的网页用户界面
我需要一个工具来快速原型化我们公司的内部工具——PDF生成器、数据处理器、文件转换器，以便非技术同事也能使用。
func-to-web 可以从 Python 函数签名生成网页用户界面，且无需任何样板代码：
```python
from func_to_web import run
def divide(a: int, b: int):
return a / b
run(divide) # 网页用户界面位于 localhost:8000
```
对于更复杂的需求，它支持高级类型：
```python
def process_data(
scores: Annotated[
list[Annotated[int, Field(ge=0, le=100)]],
Field(min_length=3, max_length=10)
], # 3-10 项，每项 0-100
files: list[ImageFile], # 多文件上传
email: Email, # 内置验证
notes: str | None = None # 可选字段，带切换
):
return FileResponse(pdf_data, "report.pdf") # 自动下载
run(process_data)
```
主要特点：
- *高级列表*：动态添加/删除，限制列表大小和项目
- *可选字段*：`Type | None` 创建切换开关
- *文件处理*：上传/下载带进度条，支持 GB 级文件
- *丰富输出*：自动显示 PIL 图像、matplotlib 图表或可下载文件
- *动态下拉框*：运行时生成的选项来自函数
- *多个函数*：自动生成索引页面
并不是想取代完整的网页框架，但对于内部工具和快速实用程序，这种方法比编写 HTML 表单更具优势。
已有 454 个单元测试。每天用于内部工具和快速原型开发。第一周获得了 150 个星标。
GitHub: [https://github.com/offerrall/FuncToWeb](https://github.com/offerrall/FuncToWeb)
在这里分享，希望其他人也会觉得有趣 :)
查看原文
I needed a tool to quickly prototype internal utilities for our company – PDF generators, data processors, file converters that non-technical colleagues could use.<p>func-to-web generates web UIs from Python function signatures with zero boilerplate:<p>```python
from func_to_web import run<p>def divide(a: int, b: int):
return a / b<p>run(divide) # Web UI at localhost:8000
```<p>For more complex needs, it supports advanced types:<p>```python
def process_data(
scores: Annotated[
list[Annotated[int, Field(ge=0, le=100)]],
Field(min_length=3, max_length=10)
], # 3-10 items, each 0-100
files: list[ImageFile], # Multiple file uploads
email: Email, # Built-in validation
notes: str | None = None # Optional with toggle
):
return FileResponse(pdf_data, "report.pdf") # Auto-download<p>run(process_data)
```<p>Key features:
- *Advanced lists*: Dynamic add/remove with constraints on both list size and items
- *Optional fields*: `Type | None` creates toggle switches
- *File handling*: Upload/download with progress bars, supports GB+ files
- *Rich outputs*: Auto-displays PIL images, matplotlib plots, or downloadable files
- *Dynamic dropdowns*: Runtime-generated options from functions
- *Multiple functions*: Auto-generates index page<p>Not trying to replace full web frameworks, but for internal tools and quick utilities, this approach feels superior to writing HTML forms.<p>454 unit tests. Used daily for internal tools and rapid prototyping. Got 150 stars in the first week.<p>GitHub: <a href="https://github.com/offerrall/FuncToWeb" rel="nofollow">https://github.com/offerrall/FuncToWeb</a><p>Sharing here in case others find it interesting too :)