import logging
 filepath = os.path.join(os.path.dirname(ALFrameManager.getBehaviorPath(self.behaviorId)), "fileName.txt")
maybeContains = None
try:
    with open(filepath, "r") as textfile:
        maybeContains = textfile.readlines()
except:
    pass
with open(filepath, "a") as textfile:
    if maybeContains == "":
        agenda = "type1;type2;n"
        textfile.write(agenda)
        textfile.write(storedData)
    else:
        textfile.write(storedData)
self.onStopped()

def onLoad(self):
    self.logging.basicConfig(filename="20180712.log", format='%(asctime)s %(levelname)s-8s [%(filename)s:%(lineno)d]%(message)s', level=logging.DEBUG)
self.logger = self.logging.getLogger("Behavior - Box") `

    Before a command, which should be logged I call
    `    self.logger("what happened here")

filepath = "/home/nao/myfile.txt"