def SplitStringAtSeparator(string,sep):
    """ split string at commas
    
    :param str string: string
    :param str sep: separator character
    :return: strlst(lst) - list of splited strings
    """
    #return filter(lambda s: len(s) > 0, string.split(sep))    
    strlst=[]; items=string.split(sep)
    for s in items: strlst.append(s.strip())
    return strlst