file-like object raising attribute error

[rkakarlapudi]

Here is the code snippet I have been trying

from base64 import decode
from pptx import Presentation
from pptx.util import Inches, Px
import StringIO

def GeneratePPT():
    prs = Presentation()

    img_str = "iVBORw0KGgoAAAANSUhEUgAAABYAAAAWCAYAAADEtGw7AAAABmJLR0QAAAAAAAD5Q7t/AAAACXBIWXMAAA3WAAAN1gGQb3mcAAAClElEQVQ4y+\
                2UP2+cRRDGf7O798fn2I7sONiKIWCwIgqUkm+AhECkpqFDFHwdGiQqmtSkicTHoEKJ5cjITiTHZ/ts3Xvvuzs7Q+GAsBQfUeo87eh5djTz24F\
                3eiW5rrD4YESX842tjfUf15ZXNhF3/NJzenExPjw6/inFdDr9rXmtP817VTu9ef/e9vef3dv6uNSO6hUcdp+dHO4/P3qYIqfXeecGE0ijxV5K\
                i5mqM8wKuDBcCBIkhHnWucEhxl7sSZK+IrESzMBBkkcRebPghW+GAKNS9I470nbZgoRPQmIgg0qoFbMKBhJJINuluA6+WoiOeYxyKDBtHrVXl\
                /fetzcx48vP73/68621peTBcKnp/bsrq4PVJqp3aFWsGvl0qR7sT06sulpxJpOsf/y5/4MEHh89PLva8XDQpxqjnY82N9c3U7JUkL7ivZYaCy\
                EYoVZqp8jyOG7s1PV2WigzZThc0eHeYCTBXj9jATdXilXMM0JFRKGneOzQMqPNHW3taLOSs1KyQR0gIj53eeaOYZgrRad0ckqRc2qakXMhZ6N\
                ko2QnF6dmoW9r/0eFAE6TL5i0z+nSGdZvoSghCV7BCognkgguIAGCxOuD2y5jTvNk78WLhZc11dAjpNvp9lZanS3txdIpOKCR0XS7vjzQE6uo\
                K5yfu866tvkvgP9S8Q9uqvVOoBeEUAV2vvj67q+jDw9uqXdgELxP+9cH498f738H/gQhmquFyKEgTfNodrXj2SV/DfAUCosPRmhGrNBpA8UAh\
                wiYuoLvhWS7b3UrqlnR7FoaJ9fLX5fEqcWr4zbPO/8IWdHciC53G0TrcIckPc7a4ObVIuHtglNPznafHf8yHt/YgPSKU5fJxfFYgo95pzfR38\
                mJgHMtR1QSAAAAInpUWHRTb2Z0d2FyZQAAeNorLy/Xy8zLLk5OLEjVyy9KBwA22AZYEFPKXAAAAABJRU5ErkJggg=="
    file_like_object = StringIO.StringIO(img_str.decode('base64'))

    slidelayout = prs.slidelayouts[0]
    slide = prs.slides.add_slide(slidelayout)
    left = top = Inches(3)
    pic = slide.shapes.add_picture(file_like_object, left, top)

    file_like_object.close()

    prs.save('Test.pptx')

if __name__ == "__main__":
    GeneratePPT()

It raises the following error:
AttributeError: StringIO instance has no attribute 'rfind'

[scanny]

need the rest of the stack trace

[rkakarlapudi]

Traceback (most recent call last):
File "D:\tmp\snippets\generate-power-point\src\temp.py", line 32, in
GeneratePPT()
File "D:\tmp\snippets\generate-power-point\src\temp.py", line 25, in GeneratePPT
pic = slide.shapes.add_picture(file_like_object, left, top)
File "c:\Python27\lib\site-packages\python_pptx-0.2.0-py2.7.egg\pptx\presentation.py", line 1207, in add_picture
image = pkg._images.add_image(path)
File "c:\Python27\lib\site-packages\python_pptx-0.2.0-py2.7.egg\pptx\presentation.py", line 513, in add_image
image = Image(path)
File "c:\Python27\lib\site-packages\python_pptx-0.2.0-py2.7.egg\pptx\presentation.py", line 797, in init
self.__load_image_from_file(path)
File "c:\Python27\lib\site-packages\python_pptx-0.2.0-py2.7.egg\pptx\presentation.py", line 845, in __load_image_from_file
self.__ext = os.path.splitext(path)[1]
File "c:\Python27\lib\ntpath.py", line 190, in splitext
return genericpath._splitext(p, sep, altsep, extsep)
File "c:\Python27\lib\genericpath.py", line 91, in _splitext
sepIndex = p.rfind(sep)
AttributeError: StringIO instance has no attribute 'rfind'

[scanny]

I think there's a problem with StringIO converting to unicode or something like that because I believe when you call the str.decode() method it returns Unicode.

try this method to separately produce a binary 8-bit string and then StringIO it:

http://docs.python.org/2/library/base64.html#base64.decodestring

[rkakarlapudi]

I don't think it is a StringIO problem.
I get the same error if I use this line of code instead of StringIO.

file_like_object = open('TestImage.png')

[scanny]

what version are you running?

python -c "import pptx; print pptx.__version__"

[rkakarlapudi]

0.2.0

[scanny]

Stream support came in on 0.2.2. Current release is 0.2.6.

pip install -U python-pptx

to update

[rkakarlapudi]

Thanks for the quick responses. It works after the upgrade.

[scanny]

Glad to hear it :)