概述
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
? jpg C image/jpeg
? png C image/png
? gif C image/gif
? webp C image/webp
? cr2 C image/x-canon-cr2
? tif C image/tiff
? bmp C image/bmp
? jxr C image/vnd.ms-photo
? psd C image/vnd.adobe.photoshop
? ico C image/x-icon
视频
? mp4 C video/mp4
? m4v C video/x-m4v
? mkv C video/x-matroska
? webm C video/webm
? mov C video/quicktime
? avi C video/x-msvideo
? wmv C video/x-ms-wmv
? mpg C video/mpeg
? flv C video/x-flv
音频
? mid C audio/midi
? mp3 C audio/mpeg
? m4a C audio/m4a
? ogg C audio/ogg
? flac C audio/x-flac
? wav C audio/x-wav
? amr C audio/amr
资料库
? epub C application/epub+zip
? zip C application/zip
? tar C application/x-tar
? rar C application/x-rar-compressed
? gz C application/gzip
? bz2 C application/x-bzip2
? 7z C application/x-7z-compressed
? xz C application/x-xz
? pdf C application/pdf
? exe C application/x-msdownload
? swf C application/x-shockwave-flash
? rtf C application/rtf
? eot C application/octet-stream
? ps C application/postscript
? sqlite C application/x-sqlite3
? nes C application/x-nintendo-nes-rom
? crx C application/x-google-chrome-extension
? cab C application/vnd.ms-cab-compressed
? deb C application/x-deb
? ar C application/x-unix-archive
? Z C application/x-compress
? lz C application/x-lzip
字体
? woff C application/font-woff
? woff2 C application/font-woff
? ttf C application/font-sfnt
? otf C application/font-sfnt
基准测试
使用链接中的文件进行测试,你可以点击获得到它: real files .
Environment: OSX x64 i7 2.7 Ghz
------------------------------------------------------------------------------------------ benchmark: 7 tests ------------------------------------------------------------------------------------------
Name (time in ns) Min Max Mean StdDev Median IQR Outliers(*) Rounds Iterations
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
test_infer_image_from_bytes 357.6279 (1.0) 29,166.5395 (1.0) 1,642.3360 (1.0) 380.9934 (1.0) 1,509.9843 (1.0) 158.9457 (1.0) 9095;13752 102301 6
test_infer_audio_from_bytes 953.6743 (2.67) 96,082.6874 (3.29) 16,534.5880 (10.07) 3,002.1143 (7.88) 15,974.0448 (10.58) 953.6743 (6.00) 4514;6051 41528 1
test_infer_video_from_bytes 13,828.2776 (38.67) 272,989.2731 (9.36) 16,151.3144 (9.83) 3,361.2320 (8.82) 15,020.3705 (9.95) 953.6743 (6.00) 2522;2887 22193 1
test_infer_image_from_disk 15,974.0448 (44.67) 108,957.2906 (3.74) 18,621.0844 (11.34) 3,895.4441 (10.22) 17,166.1377 (11.37) 1,192.0929 (7.50) 1528;1804 10206 1
test_infer_video_from_disk 23,841.8579 (66.67) 229,120.2545 (7.86) 28,691.3476 (17.47) 6,242.9901 (16.39) 25,987.6251 (17.21) 4,053.1158 (25.50) 1987;1247 15651 1
test_infer_zip_from_disk 26,941.2994 (75.33) 230,073.9288 (7.89) 32,123.3861 (19.56) 7,524.4988 (19.75) 29,087.0667 (19.26) 4,768.3716 (30.00) 1349;1292 16132 1
test_infer_tar_from_disk 33,855.4382 (94.67) 164,031.9824 (5.62) 36,884.4401 (22.46) 4,489.4443 (11.78) 36,001.2054 (23.84) 953.6743 (6.00) 1036;1828 14666 1
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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