id2url.py

id2url.py

#!/usr/bin/env python

"""
    id2url.py
    
    Convert instagram post id to the url
"""

import os
from string import letters

lookup = letters[-26:] + letters[:26] + ''.join(map(str, range(10))) + '-' + '_'
lookup = dict(zip(map(str, range(64)), lookup))

def baseb(n, b):
    e = n // b
    q = n % b
    if n == 0:
        return '0'
    elif e == 0:
        return str(q)
    else:
        return baseb(e, b) + ':' + str(q)


def id2url(mid):
    pmid = mid.split('_')[0]
    pmid64 = baseb(long(pmid), 64).split(':')
    pmid_enc = ''.join([lookup[m] for m in pmid64])
    return os.path.join('https://www.instagram.com/p/', pmid_enc)


id2url('1052907828199364530_242280836')