I am giving you a script. Check for any errors like index errors etc. Also optimize the script so that I can use in Google colab mobile. Here is the script= # @title  (clean)DROPMMS AND MMSDOSE WATERMARK LOGOS ADD
# Install necessary libraries
import os, contextlib, sys # Import sys here
@contextlib.contextmanager
def suppress_stdout():
    with open(os.devnull, "w") as devnull:
        old_stdout = sys.stdout
        sys.stdout = devnull
        try:  
            yield
        finally:
            sys.stdout = old_stdout

with suppress_stdout():
    !pip install pillow ipywidgets

# Import necessary libraries
from PIL import Image, ImageEnhance
import ipywidgets as widgets
from IPython.display import display, clear_output
from google.colab import drive, files
import zipfile
import os
import shutil

# Import the interact function
from ipywidgets import interact 

# Mount Google Drive quietly
with suppress_stdout():  # Suppress mounting messages
    drive.mount('/content/drive')

def apply_watermarks(image, watermark, opacity, scale_factor, flip):
    """Apply the watermark in two locations: bottom center and top left."""
    
    if flip:
        image = image.transpose(method=Image.FLIP_LEFT_RIGHT)

    # Scale watermark
    w_width = int(image.width * scale_factor)
    w_height = int(watermark.height * (w_width / watermark.width))
    resized_watermark = watermark.resize((w_width, w_height), Image.LANCZOS)
    
    if resized_watermark.mode != 'RGBA':
        resized_watermark = resized_watermark.convert('RGBA')
    
    # Apply opacity
    alpha = resized_watermark.split()[3]
    alpha = ImageEnhance.Brightness(alpha).enhance(opacity)
    resized_watermark.putalpha(alpha)
    
    # Positions for both watermark placements
    wm_position_bottom = ((image.width - resized_watermark.width) // 2, image.height - resized_watermark.height - 10)
    wm_position_top_left = (10, 10)
    
    # Create image with two watermarks
    transparent_image = Image.new('RGBA', image.size)
    transparent_image.paste(image, (0, 0))
    transparent_image.paste(resized_watermark, wm_position_bottom, mask=resized_watermark)
    transparent_image.paste(resized_watermark, wm_position_top_left, mask=resized_watermark)
    
    return transparent_image

# Upload ZIP file containing images
print("Upload your ZIP file containing images:")
uploaded_zip = files.upload()

# Extract the name of the uploaded ZIP file
zip_filename = list(uploaded_zip.keys())[0]
base_zip_name = os.path.splitext(zip_filename)[0]

# Extract ZIP
with zipfile.ZipFile(zip_filename, 'r') as zip_ref:
    zip_ref.extractall('/content/input_images')

# Upload first watermark logo image
print("Upload your first watermark logo image (for DROPMMS):")
uploaded_watermark1 = files.upload()
watermark_path1 = list(uploaded_watermark1.keys())[0]
watermark_img1 = Image.open(watermark_path1).convert("RGBA")

# Upload second watermark logo image
print("Upload your second watermark logo image (for MMSDOSE):")
uploaded_watermark2 = files.upload()
watermark_path2 = list(uploaded_watermark2.keys())[0]
watermark_img2 = Image.open(watermark_path2).convert("RGBA")

# Prepare output folders
output_folder1 = '/content/output_images_dropmms'
output_folder2 = '/content/output_images_mmsdose'
os.makedirs(output_folder1, exist_ok=True)
os.makedirs(output_folder2, exist_ok=True)

# Use the first image for a preview
image_folder = '/content/input_images'
image_files = [f for f in os.listdir(image_folder) if os.path.isfile(os.path.join(image_folder, f))]
first_image_path = os.path.join(image_folder, image_files[0])

# Create sliders and toggle for watermark adjustments
slider_opacity = widgets.FloatSlider(value=0.5, min=0.0, max=1.0, step=0.1, description='Opacity:')
slider_scale = widgets.FloatSlider(value=0.2, min=0.1, max=1.0, step=0.05, description='Scale:')
toggle_flip = widgets.Checkbox(value=False, description='Flip Horizontally')

def preview(opacity, scale_factor, flip):
    """Preview watermark on the first image for each of the logos."""
    with Image.open(first_image_path) as sample_image:
        sample_image = sample_image.convert("RGBA")
        result_image1 = apply_watermarks(sample_image, watermark_img1, opacity, scale_factor, flip)
        result_image2 = apply_watermarks(sample_image, watermark_img2, opacity, scale_factor, flip)

        clear_output(wait=True)
        print("Preview with first watermark (DROPMMS):")
        display(result_image1)
        print("Preview with second watermark (MMSDOSE):")
        display(result_image2)

# Interact to preview settings
interact(preview, opacity=slider_opacity, scale_factor=slider_scale, flip=toggle_flip)

# Function to process all images based on settings
def process_images(opacity, scale_factor, flip):
    for filename in image_files:
        input_image_path = os.path.join(image_folder, filename)

        with Image.open(input_image_path) as img:
            img = img.convert("RGBA")
            # Watermark with first logo (applied twice on each image)
            watermarked_image1 = apply_watermarks(img, watermark_img1, opacity, scale_factor, flip)
            output_path1 = os.path.join(output_folder1, filename)
            watermarked_image1.save(output_path1, "PNG")

            # Watermark with second logo (applied twice on each image)
            watermarked_image2 = apply_watermarks(img, watermark_img2, opacity, scale_factor, flip)
            output_path2 = os.path.join(output_folder2, filename)
            watermarked_image2.save(output_path2, "PNG")

    # Zip processed images with suffixes
    output_zip_path1 = f'/content/{base_zip_name}_DROPMMS.zip'
    output_zip_path2 = f'/content/{base_zip_name}_MMSDOSE.zip'

    with zipfile.ZipFile(output_zip_path1, 'w', zipfile.ZIP_DEFLATED) as zipf1:
        for root, dirs, files in os.walk(output_folder1):
            for file in files:
                zipf1.write(os.path.join(root, file), os.path.relpath(os.path.join(root, file), output_folder1))

    with zipfile.ZipFile(output_zip_path2, 'w', zipfile.ZIP_DEFLATED) as zipf2:
        for root, dirs, files in os.walk(output_folder2):
            for file in files:
                zipf2.write(os.path.join(root, file), os.path.relpath(os.path.join(root, file), output_folder2))

    # Create folders in Google Drive
    drive_folder = '/content/drive/My Drive/Watermark images'
    os.makedirs(drive_folder, exist_ok=True)

    # Move ZIPs to the new folder in Google Drive
    shutil.move(output_zip_path1, f'{drive_folder}/{base_zip_name}_DROPMMS.zip')
    shutil.move(output_zip_path2, f'{drive_folder}/{base_zip_name}_MMSDOSE.zip')
    print(f"Processed images have been zipped and saved to {drive_folder} in your Google Drive.")

# Button to start processing
confirm_button = widgets.Button(description="Batch Process Images")
confirm_button.on_click(lambda _: process_images(slider_opacity.value, slider_scale.value, toggle_flip.value))

display(confirm_button)