Recognize c4d did finish loading

import  c4d
from    time           import sleep, time
from    threading      import Thread
from    c4d.documents  import GetActiveDocument

def WaitUntilC4DDidFinishLoading(timeout = None, sleeptime = .5):
    doc     = GetActiveDocument()

    if timeout:
        startingTime    = time()
    else:
        startingTime    = 0.

    while True:
        if doc != GetActiveDocument():
            break

        delta   = (time() - startingTime)
        if (delta > timeout) and (timeout):
            return False

    sleep(sleeptime)

    return True

def main():
    waitSuc = WaitUntilC4DDidFinishLoading()

    print waitSuc

    if waitSuc:
        doc     = GetActiveDocument()
        doc.InsertObject(c4d.BaseObject(c4d.Ocube))

        c4d.EventAdd()

if __name__ == "__main__":
    t       = Thread(target = main)
    t.start()