def display(studentID,anAge=-1,aName="No name"):
    print(aName,studentID,anAge)

def start():
    display(123456,18,"Smiley")
    display(111111)

start()


"""
Won't work: non-default argument'studentID' follows default argument 'aName'
def wrongDisplay(aName="No name",studentID,anAge=-1,):
    print(aName,studentID,anAge)
"""