Python使用filetype精确判断文件类型

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

"_blank" href="https://h2non.github.io/filetype.py/" rel="external nofollow" >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

"_blank" href="https://github.com/h2non/filetype.py/tree/master/tests/fixtures" rel="external nofollow" >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
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------