try to figure out collation in couchdb

collation.py

from couchdb.client import Server

server = Server()
db = server['collation-test']
try:
    for idx in range(65535):
        db.save( {'unichr':unichr(idx), 'code': idx, 'hex': str(hex(idx))} )
        print "{0}\n".format(hex(idx))
except Exception, e:
    raise e

map.js

function(doc) {
  log(doc.code + " hex:"+doc.hex);
  emit(doc.unichr, doc.hex);
}

It's easy to handle insert failure:

docs = []
for idx in range(65535):
    docs.append({'unichr':unichr(idx), 'code': idx, 'hex': str(hex(idx))})
for success, docid, rev_or_exc in db.update(docs, all_or_nothing=True):
    if success:
        print docid, rev_or_exc
    else:
        raise rev_or_exc