Draw bar image error

this is my code:

def draw_images(values):
    for item in tqdm(values):

        plt.xticks(item[1:6], item[1:6])

        plt.bar(item[1:6], item[6:], color='red', width=0.02)

        plt.savefig(f"F:\\BMIProjects\\mlm\\data\\image\\{item[0]}.jpg")

if i don’t add plt.show, the image is all wrong…

C48H88O12

this image is use plt.show and use gui button save:
Figure_1

What is in item? I suspect they are strings and not numbers.