extract x y coordinates from image in pdf python

1import sys
2import pyPdf
3
4def extract(in_file, coords, out_file):
5    with open(in_file, 'rb') as infp:
6        reader = pyPdf.PdfFileReader(infp)
7        page = reader.getPage(0)
8        writer = pyPdf.PdfFileWriter()
9        page.mediaBox.lowerLeft = coords[:2]
10        page.mediaBox.upperRight = coords[2:]
11        # you could do the same for page.trimBox and page.cropBox
12        writer.addPage(page)
13        with open(out_file, 'wb') as outfp:
14            writer.write(outfp)
15
16if __name__ == '__main__':
17    in_file = sys.argv[1]
18    coords = [int(i) for i in sys.argv[2:6]]
19    out_file = sys.argv[6]
20
21    extract(in_file, coords, out_file)
22