เพิ่มแสตมป์ข้อความลงใน PDF ผ่าน Python

import aspose.pdf as apdf

from os import path

path_infile = path.join(self.data_dir, infile)
path_outfile = path.join(self.data_dir, outfile)

document = apdf.Document(path_infile)
document.pages.add()
# Create text stamp
textStamp = apdf.TextStamp("Sample Stamp")
# Set whether stamp is background
textStamp.background = True
# Set origin
textStamp.x_indent = 100
textStamp.y_indent = 100
# Rotate stamp
textStamp.rotate = apdf.Rotation.ON90
# Set text properties
textStamp.text_state.font = apdf.text.FontRepository.find_font("Arial")
textStamp.text_state.font_size = 14
textStamp.text_state.font_style = apdf.text.FontStyles(
    apdf.text.FontStyles.BOLD | apdf.text.FontStyles.ITALIC )
textStamp.text_state.foreground_color = apdf.Color.aqua
# Add stamp to particular page
document.pages[1].add_stamp(textStamp)

# Save output document
document.save(path_outfile)