A code which shows 2 different evaluation of RethinkDB ReQL filter which is suppose to return two same data, but it doesn't.

gistfile1.py

import calendar
from datetime import datetime as dt
import rethinkdb as r

r.connect( "localhost", 28015).repl()
table = r.db('test').table('test')
print table.delete().run()
docs = [{'t': i} for i in range(20)]
print table.insert(docs).run()
start, end = 10, 12
print table.filter(
    lambda row: row['t'] >= start & row['t'] < end
    ).count().run()  # 12
print table.filter(
    r.row['t'].ge(start) & r.row['t'].lt(end)
    ).count().run()  # 2