import os
import photomosaic.flickr
import photomosaic as pm


if not os.path.isfile('~/pools/cats/pool.json'):
    FLICKR_API_KEY = os.environ['FLICKR_API_KEY']
    pm.set_options(flickr_api_key=FLICKR_API_KEY)

    photomosaic.flickr.from_search('cats', '~/pools/cats/')
    pool = pm.make_pool('~/pools/cats/*.jpg')
    pm.export_pool(pool, '~/pools/cats/pool.json')  # save color analysis for future reuse

import os
import photomosaic.flickr
import photomosaic as pm


if not os.path.isfile(os.path.expanduser('~/pools/cats/pool.json')):
    FLICKR_API_KEY = os.environ['FLICKR_API_KEY']
    pm.set_options(flickr_api_key=FLICKR_API_KEY)

    photomosaic.flickr.from_search('cats', '~/pools/cats/')
    pool = pm.make_pool('~/pools/cats/*.jpg')
    pm.export_pool(pool, '~/pools/cats/pool.json')  # save color analysis for future reuse

Fix check for existing pools.
BLD: Fix check for existing pools.

  import os
  import photomosaic.flickr
  import photomosaic as pm
  
  
- if not os.path.isfile('~/pools/cats/pool.json'):
+ if not os.path.isfile(os.path.expanduser('~/pools/cats/pool.json')):
      FLICKR_API_KEY = os.environ['FLICKR_API_KEY']
      pm.set_options(flickr_api_key=FLICKR_API_KEY)
  
      photomosaic.flickr.from_search('cats', '~/pools/cats/')
      pool = pm.make_pool('~/pools/cats/*.jpg')
      pm.export_pool(pool, '~/pools/cats/pool.json')  # save color analysis for future reuse
  
Fix check for existing pools.
## Code Before:
import os
import photomosaic.flickr
import photomosaic as pm


if not os.path.isfile('~/pools/cats/pool.json'):
    FLICKR_API_KEY = os.environ['FLICKR_API_KEY']
    pm.set_options(flickr_api_key=FLICKR_API_KEY)

    photomosaic.flickr.from_search('cats', '~/pools/cats/')
    pool = pm.make_pool('~/pools/cats/*.jpg')
    pm.export_pool(pool, '~/pools/cats/pool.json')  # save color analysis for future reuse

## Instruction:
Fix check for existing pools.
## Code After:
import os
import photomosaic.flickr
import photomosaic as pm


if not os.path.isfile(os.path.expanduser('~/pools/cats/pool.json')):
    FLICKR_API_KEY = os.environ['FLICKR_API_KEY']
    pm.set_options(flickr_api_key=FLICKR_API_KEY)

    photomosaic.flickr.from_search('cats', '~/pools/cats/')
    pool = pm.make_pool('~/pools/cats/*.jpg')
    pm.export_pool(pool, '~/pools/cats/pool.json')  # save color analysis for future reuse
