<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _log(code, message, level, domain):
 """Call this to add an entry in the journal"""

        entry = LogEntry(level, domain, code, message)
        Logger.journal.append(entry)

        if Logger.silent:
            return

        if level >= Logger._verbosity:
            _print_entry(entry)