def format_param(s=''):
    return ':%s' % s if s else '?'
There was an error where we double-callbacked a deferred,
dataset/ETHPy150Open moskytw/mosql/mosql/sqlite.py/format_param--crossover with--dataset/ETHPy150Open meejah/txtorcon/test/test_torconfig.py/LaunchTorTests.test_tor_launch_success_then_shutdown