python pptx add image without image file

Question

I create a pptx file using python pptx package (python 2.7)

I have a image in memory that i create using matplotlib with this code:

import matplotlib.pyplot as plt

plt.clf()

plt.imshow(data, cmap='hot', interpolation='nearest')
plt.xlabel(x_l)
plt.ylabel(y_l)
plt.title(title)

x_values = range(len(times))

plt.xticks(x_values[::len(x_values)/24], range(24))

plt.yticks(range(len(dates)),dates)
plt.axes().set_aspect('auto')

return plt.gcf()

Later i try to add this image to the pptx file using

pic = shapes.add_picture(image, left,top = top, width= width, height = height )

and get the following error: AttributeError: 'Figure' object has no attribute 'read'

The code works if i save the image to a file and then read it to the pptx file with the path, with exactly the same code. adding image file to pptx file

I found only how to add an image file to the pptx, and nothing about adding image from memory.

I need to add it without saving any file to disk.

Thanks!

Community · Accepted Answer · 2017-05-23 10:27:29Z

3

You can save it to an in-memory StringIO stream (a "file-like object") and feed the StringIO object to python-pptx.

import StringIO

image_stream = StringIO.StringIO()
image.save(image_stream)
pic = shapes.add_picture(image_stream, left, top, width, height)
image_stream.close() # probably optional, but couldn't hurt

These other two questions have additional details.

edited May 23, 2017 at 10:27

CommunityBot

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answered Oct 20, 2016 at 8:36

scanny

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2 Comments

thebeancounter Over a year ago

could you please detail the answer so i will be able to accept it?

scanny Over a year ago

@captainshai I've added a more explicit code snippet

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