PPTX to text extractor using pptx-python package

pptx-to-text.py

import sys
from pptx import Presentation
if len(sys.argv) > 1:
	prs = Presentation(sys.argv[1])
else:
	exit("Error: Add pptx file in next argument")

for slide in prs.slides:
    for shape in slide.shapes:
        if not shape.has_text_frame:
            continue
        for paragraph in shape.text_frame.paragraphs:
            for run in paragraph.runs:
            	print run.text
    print '\n'