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def generate_barcode(product_code): Code128 = barcode.get_barcode_class('code128') writer = ImageWriter() dpi = 300 # Use a fixed DPI value (adjust it according to your printer's DPI) page_size_mm = (25.4, 54) page_size_pixels = tuple(int(dpi * page_size_mm[i] / 25.4) for i in (0, 1)) # Calculate the required module width and height based on the desired size desired_width = page_size_pixels[1] - 10 # Subtract a small margin desired_height = page_size_pixels[0] - 10 # Subtract a small margin writer.dpi = dpi writer.module_width = int(desired_width / 110) # Adjust the value to fit the desired width writer.module_height = int(desired_height / 30) # Adjust the value to fit the desired height writer.font_size = 12 writer.text_distance = 0 writer.quiet_zone = 6.5 barcode_image = Code128(product_code, writer=writer) output_filename = 'temp_barcode' barcode_image.save(output_filename) # Rotate the image by 90 degrees image = Image.open(output_filename + ".png") rotated_image = image.rotate(270, expand=True) # Rotate 270 degrees to achieve the desired orientation rotated_image.save(output_filename + ".png") return output_filename