Python库 使用filetype精确判断文件类型

作用

一个小巧自由开放Python开发包，主要用来获得文件类型。

支持版本：

python2/python3

安装：

pip?install?filetype

功能特色

• 简单友好的API

• 支持宽范围文件类型

• 提供文件扩展名和MIME类型判断

• 文件的MIME类型扩展新增

• 通过文件（图像、视频、音频…）简单分析

• 可插拔：添加新的自定义类型的匹配

• 快，即使处理大文件

• 只需要前261个字节表示的最大文件头，这样你就可以通过一个单字节

• 依赖自由（只是Python代码，没有C的扩展，没有libmagic绑定）

• 跨平台文件识别

代码示例：

import?filetype

def?main():
????kind?=?filetype.guess('tests/fixtures/sample.jpg')
????if?kind?is?None:
????????print('Cannot?guess?file?type!')
????????return

????print('File?extension:?%s'?%?kind.extension)
????print('File?MIME?type:?%s'?%?kind.mime)

if?__name__?==?'__main__':
????main()

支持类型

图片

• jpg? –? image/jpeg?

• png? –? image/png?

• gif? –? image/gif?

• webp? –? image/webp?

• cr2? –? image/x-canon-cr2?

• tif? –? image/tiff?

• bmp? –? image/bmp?

• jxr? –? image/vnd.ms-photo?

• psd? –? image/vnd.adobe.photoshop?

• ico? –? image/x-icon

视频

• mp4? –? video/mp4?

• m4v? –? video/x-m4v?

• mkv? –? video/x-matroska?

• webm? –? video/webm?

• mov? –? video/quicktime?

• avi? –? video/x-msvideo?

• wmv? –? video/x-ms-wmv?

• mpg? –? video/mpeg?

• flv? –? video/x-flv

音频

• mid? –? audio/midi?

• mp3? –? audio/mpeg?

• m4a? –? audio/m4a?

• ogg? –? audio/ogg?

• flac? –? audio/x-flac?

• wav? –? audio/x-wav?

• amr? –? audio/amr

资料库?

• epub? –? application/epub+zip?

• zip? –? application/zip?

• tar? –? application/x-tar?

• rar? –? application/x-rar-compressed?

• gz? –? application/gzip?

• bz2? –? application/x-bzip2?

• 7z? –? application/x-7z-compressed?

• xz? –? application/x-xz?

• pdf? –? application/pdf?

• exe? –? application/x-msdownload?

• swf? –? application/x-shockwave-flash?

• rtf? –? application/rtf?

• eot? –? application/octet-stream?

• ps? –? application/postscript?

• sqlite? –? application/x-sqlite3?

• nes? –? application/x-nintendo-nes-rom?

• crx? –? application/x-google-chrome-extension?

• cab? –? application/vnd.ms-cab-compressed?

• deb? –? application/x-deb?

• ar? –? application/x-unix-archive?

• Z? –? application/x-compress?

• lz? –? application/x-lzip

字体?

• woff? –? application/font-woff?

• woff2? –? application/font-woff?

• ttf? –? application/font-sfnt?

• otf? –? application/font-sfnt

（编辑：李大同）

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