def downcaseTokens ( s , l , t ) : return [ tt . lower ( ) for tt in map ( _ustr , t ) ]
is ther a way to lowercase a string in a list in python
Helper parse action to convert tokens to lower case .
def downcaseTokens(s,l,t):
    """Helper parse action to convert tokens to lower case."""
    return [ tt.lower() for tt in map(_ustr,t) ]