Prensent Stimuli

Tanto

Hi,
I just try to presenting stimuli that contain R and B letter for charity work with younger children. The stimuli will be like this
RRRRRRRRRRRRRRRRRBRRRRRRRRRR
RRRRRRRRRBRRRRRRRRRRRRRRRRRR
RRRRRRRRRRRRRRRRBRRRRRRRRRRR
RRRRRRRRRRRRRRRRRRRRRRRRRRRR
I couldn't present them with list as error emerged saying "list object has no attribute decode"..ok i can get another solution replace them with image. But I still struggle to find the solution. These stimuli contain 4 random trial. Any help would be appreciated
Thanks

fladd

Not sure if I understand you correctly, but wouldn't this work:

def create_random_stim():
    sequence = ["R"] * 27 + ["B"]
    expyriment.design.randomize.shuffle_list(sequence)
    return expyriment.stimuli.TextLine("".join(sequence))

stim1 = create_random_stim()
stim2 = create_random_stim()
stim3 = create_random_stim()
stim4 = create_random_stim()

Tanto

Yes many thanks Florian! and sorry for frequently asking you terrible question.