Demonstrate how to script file download from Synapse

download_synapse_files.py

import os
import synapseclient

syn = synapseclient.Synapse()
syn.login() # insert credentials here, unless you have a cached API key.

##  ADChallenge_WorkingGroup (syn2343636) Files	» ADNI » Genetics » GWAS
folder_id = 'syn2362101'

## Get all children of the parent folder
results = syn.chunkedQuery('select id,name,concreteType from entity where parentId=="%s"' % folder_id)

## Where would we like the files to go?
project_dir = '/Users/chris/Documents/work/projects/alzheimers_challenge'
destination_directory = os.path.join(project_dir, 'data/adni/gwas')

## download all files in the folder
entities = []
for result in results:
    print "downloading", result['entity.id'], result['entity.name']
    e = syn.get(result['entity.id'], downloadLocation=destination_directory)
    entities.append(e)