exists always false when load existing db

[chrisdlangton]

test script;

#main.py

import os
import pickledb

DBCHANGES = False
base_dir = '/tmp'
filename = 'example.db'

db = pickledb.load(os.path.join(base_dir, filename), False)

key = 123456789
value = 'blah'

if not db.exists(key):
  db.set(key, value)
  DBCHANGES = True

if db.exists(key):
  print db.get(key)

if DBCHANGES:
  db.dump()
  print 'dumped db'

results in;

~$ python main.py
blah
dumped db
~$ python main.py
blah
dumped db
~$ cat /tmp/example.db
{"123456789": "blah", "123456789": "blah"}%

And we now have duplication in the databse because due to the failure of the exists method

[patx]

This is happening because the key you are testing to see if it exists is stored in json as a str, not as an int like your script (line 10).

>>> db.exists(123456789)
False
>>> db.exists("123456789")
True

As you mentioned this only happens when loading an existing json file, if you were to set a key as an int you would be able to call it as an int until you dumped the database to a json file.