<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def wait_for_signal(self, timeout=None):
 		""" 		wait for the signal; return after the signal has occurred or the 		timeout in seconds elapses. 		"""

		timeout_ms = int(timeout * 1000) if timeout else win32event.INFINITE
		win32event.WaitForSingleObject(self.signal_event, timeout_ms)