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The imghdr module determines the type of image contained in a file or octet-streams(object of Buffer), inspired by Python's imghdr module.

The imghdr module defines the following function:

Tests the image data contained in the file named by imgPath, and returns a string describing the image type. imgPath can be a object of Buffer.

You can extend the list of file types imghdr can recognize by appending to this variable:

A list of functions performing the individual tests. Each function takes a argument: the octet-streams(object of Buffer).The test function should return a string describing the image type if the test succeeded, or flase if it failed.

• http://www.filesignatures.net
• http://www.garykessler.net/library/file_sigs.html
• https://docs.python.org/3.4/library/imghdr.html