python使用magic模块进行文件类型识别方法

>>> import magic
>>> magic.from_file(\"testdata/test.pdf\")
\'PDF document, version 1.2\'
>>> magic.from_buffer(open(\"testdata/test.pdf\").read(1024))
\'PDF document, version 1.2\'
>>> magic.from_file(\"testdata/test.pdf\", mime=True)
\'application/pdf\'

>>> f = magic.Magic(uncompress=True)
>>> f.from_file(\'testdata/test.gz\')
\'ASCII text (gzip compressed data, was \"test\", last modified: Sat Jun 28
21:32:52 2008, from Unix)\'

>>> f = magic.Magic(mime=True, uncompress=True)
>>> f.from_file(\'testdata/test.gz\')
\'text/plain\'