在streamlit的file_uploader中使用自己的文件扩展名

发布于 2025-01-11 02:54:27 字数 1176 浏览 0 评论 0原文

Streamlit 的 file_uploader 小部件让您可以通过类型选项：

类型（str 或 str 列表或 None）
允许的扩展名数组。 ['png', 'jpg'] 默认为 None，即表示允许所有扩展。

与常见的文件扩展名相比，我正在使用非标准的文件扩展名，例如 .details.txt。如果配置了 type='txt，则可以选择这些文件：

uploaded_files = st.file_uploader(
    "Choose file(s)",
    type=['txt'],
    accept_multiple_files=True,
)

但是，这也允许用户提供我想要阻止的其他 txt 文件。用户应该只能上传 .details.txt 文件，而不能上传 .report.txt 之类的文件。

指定 type='.details.txt' 或 type='details.txt' 并不能解决问题。在这些情况下，我无法选择任何文件。

以下代码片段可用于重现所描述的行为：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import streamlit as st

uploaded_files = st.file_uploader(
    "Choose file(s)",
    type=['txt'],
    # type=['.txt'],
    # type=['details.txt'],
    # type=['.details.txt'],
    accept_multiple_files=True,
)

此外，您需要在文件系统上创建一个 something.txt 和一个 something.details.txt 文件。

有没有办法指定自己的非标准文件类型？

原文

Streamlit's file_uploader widget let's you define the allowed file extensions via the type option:

type (str or list of str or None)
Array of allowed extensions. ['png', 'jpg'] The default is None, which
means all extensions are allowed.

In contrast to the common file extensions I am working with a non-standard one like .details.txt. These files can be selected if type='txt is configured:

uploaded_files = st.file_uploader(
    "Choose file(s)",
    type=['txt'],
    accept_multiple_files=True,
)

However, this also allows the user to provide other txt files which I want to prevent. The user should be able to upload .details.txt files only, but not files like .report.txt.

Specifying type='.details.txt' or type='details.txt' did not do the trick. In these cases I was not able to select any file.

The following snippet can be used to reproduce the behavior described:

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import streamlit as st

uploaded_files = st.file_uploader(
    "Choose file(s)",
    type=['txt'],
    # type=['.txt'],
    # type=['details.txt'],
    # type=['.details.txt'],
    accept_multiple_files=True,
)

In addition, you would need to create a something.txt and a something.details.txt file on your filesystem.

Is there a way to specify own non-standard file types?

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