Extract images from Powerpoint presentation files.

extractImagesFromPPT.py

# Author: Francis Laclé
# 13/01/2022
# Extract images from Powerpoint presentation files.
# We assume PPT(X)'s are in subdirectories and we scan one level deep.
# In case more depth is required, change the recursive flag to True on line 25.

# Objective:
# From the root directory, scan for PPT(X) files in sub directories (1-level)
# Then, for each PPT(X) open it, extract the images and save them on the disk

from glob import glob
from pptx import Presentation
from pptx.enum.shapes import MSO_SHAPE_TYPE

def iter_picture_shapes(prs):
    for slide in prs.slides:
        for shape in slide.shapes:
            if shape.shape_type == MSO_SHAPE_TYPE.PICTURE:
                yield shape

# Specify a "root" directory as the starting point
def main_func(root_dir):
    # from https://stackoverflow.com/a/36426997/861597
    path = root_dir
    dirs = glob(root_dir + "/*/", recursive = False)
    for dir in dirs:
        files = glob(dir+"*.ppt*")
        for filename in files:
            # adapted from https://stackoverflow.com/a/52504408/861597
            c = 0
            for picture in iter_picture_shapes(Presentation(filename)):
                image = picture.image
                # ---get image "file" contents---
                image_bytes = image.blob
                image_filename = dir + str(c) + '_' + image.filename
                with open(image_filename, 'wb') as f:
                    f.write(image_bytes)
                    c = c + 1

main_func('./some/dir/path/string')