def get_files_types(self):
        try:
            import magic
        except ImportError:
            # no lib magic !
            for i in self.get_files():
                buffer = self.zip.read(i)
                self.files_crc32[i] = crc32(buffer)
                self.files[i] = "Unknown"
            return self.files

        if self.files != {}:
            return self.files

        builtin_magic = 0
        try:
            getattr(magic, "MagicException")
        except AttributeError:
            builtin_magic = 1

        if builtin_magic:
            ms = magic.open(magic.MAGIC_NONE)
            ms.load()

            for i in self.get_files():
                buffer = self.zip.read(i)
                self.files[i] = ms.buffer(buffer)
                if self.files[i] is None:
                    self.files[i] = "Unknown"
                else:
                    self.files[i] = self._patch_magic(buffer, self.files[i])
                self.files_crc32[i] = crc32(buffer)
        else:
            m = magic.Magic(magic_file=self.magic_file)
            for i in self.get_files():
                buffer = self.zip.read(i)
                self.files[i] = m.from_buffer(buffer)
                if self.files[i] is None:
                    self.files[i] = "Unknown"
                else:
                    self.files[i] = self._patch_magic(buffer, self.files[i])
                self.files_crc32[i] = crc32(buffer)

        return self.files
Return the files inside the APK with their associated types (by using python-magic)
dataset/ETHPy150Open androguard/androguard/androguard/core/bytecodes/apk.py/APK.get_files_types