At the start of a turn, if it's player 0 and they win a 50% rand roll, I want to trigger something. Currently, if they win, it triggers it 5+ times!?

Code:
def onBeginPlayerTurn(self, argsList):
'Called at the beginning of a players turn'
iGameTurn, iPlayer = argsList
py = PyPlayer(iPlayer)
pPlayer = gc.getPlayer(iPlayer)
unitList = py.getUnitList()
for iPlayerLoop in range(4): #loop through all the players
pPlayer = gc.getPlayer(iPlayerLoop)
pyPlayer = PyPlayer(iPlayerLoop)
if (iPlayerLoop == 0): #if it's player 0, do this...if not, move on...right?
chance = CyGame().getSorenRandNum(100, "")
if chance >= 50: #if the roll is above 50, print the message below....ONCE!
self.addPopup('this message appears more than once')
