A media type (also known as a Multipurpose Internet Mail Extensions or MIME type) is a standard that indicates the nature and format of a document, file, or assortment of bytes. It is defined and standardized in IETF’s RFC 6838.
Python has a module called
mimetypes that you can use to guess the mime type of a file. However, it is not a reliable way to know the mime type of a file. For example,
>>> import mimetypes >>> print(mimetypes.MimeTypes().guess_type('my_file.txt')) text/plain
You can also use a non-standard module called
python-magic to deduce the mimetype of a file. For example,
>>> import magic >>> mime = magic.Magic(mime=True) >>> mime.from_file("my_file.txt") text/plain
See how to detect mime type of a file in Java using Apache Tika library.