pythonのgifparser

gifparse_sample.py

from pprint import pprint
import requests 
gif_bytes = requests.get("http://imgs.xkcd.com/comics/frequency/heartbeat.gif").content

import gifparse
gif = gifparse.parse(gif_bytes)
pprint(gif.__dict__)

# output
'''
{'application_extensions': [<gifparse.blocks.ApplicationExtension object at 0x103b2f8d0>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2f950>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fa10>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fad0>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fb90>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fc50>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fd10>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fdd0>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2fe90>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b2ff50>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e050>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e110>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e1d0>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e290>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e350>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e410>,
                            <gifparse.blocks.ApplicationExtension object at 0x103b4e4d0>],
 'comment_extensions': [],
 'frames': [{'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2f890>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2f910>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2f990>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2f9d0>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fa50>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fa90>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fb10>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fb50>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fbd0>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fc10>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fc90>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fcd0>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fd50>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fd90>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fe10>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2fe50>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2fed0>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2ff10>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b2ff90>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b2ffd0>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e090>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e0d0>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e150>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e190>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e210>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e250>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e2d0>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e310>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e390>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e3d0>},
            {'gce': <gifparse.blocks.GraphicsControlExtension object at 0x103b4e450>,
             'image_block': <gifparse.blocks.ImageBlock object at 0x103b4e490>}],
 'global_color_table': <gifparse.blocks.GlobalColorTable object at 0x103b2f110>,
 'header': <gifparse.blocks.Header object at 0x1036bbf90>,
 'io': <_io.BytesIO object at 0x1039fd230>,
 'screen_desc': <gifparse.blocks.LogicalScreenDescriptor object at 0x1036c5450>,
 'trailer': <gifparse.blocks.Trailer object at 0x103b4e510>}
'''

これ。便利そう。
jsvine/gifparse