def show_images(self, size="<STR_LIT>"):
d = dict(small=<NUM_LIT>, med=<NUM_LIT>, thumb=<NUM_LIT:100>, full=<NUM_LIT>)<EOL>try:<EOL><INDENT>width = d[size]<EOL><DEDENT>except KeyError:<EOL><INDENT>print("<STR_LIT>", d.keys())<EOL>return<EOL><DEDENT>img_urls = [i._get_img_url(size) for i in self.obsids]<EOL>imagesList = "<STR_LIT>".join(<EOL>[<EOL>"<STR_LIT>"<EOL>"<STR_LIT>"<EOL>"<STR_LIT>".format(width, s)<EOL>for s in img_urls<EOL>]<EOL>)<EOL>display(HTML(imagesList))<EOL>
Shows preview images using the Jupyter notebook HTML display.

        Parameters
        ==========
        size : {'small', 'med', 'thumb', 'full'}
            Determines the size of the preview image to be shown.