Python使用filetype精确判断文件类型 (文件类型获取)

filetype.py

Small and dependency free Python package to infer file type and MIME type checking the magic numbers signature of a file or buffer.

This is a Python port from filetype Go package. Works in Python +3 .

一个小巧自由开放Python开发包，主要用来获得文件类型。包要求Python 3.+

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

安装

pip install filetype

API

详情请查看 annotated API reference .

实例

简单的文件类型识别

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