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document.add_picture ZeroDivisionError: division by zero

See original GitHub issue

Hello,I have a question,i want to add a picture to doc Mycode:

from docx import Document
from docx.shared import Inches

document = Document()
document.add_picture('./test.jpg',width=Inches(1.25))
document.save('demo.docx')

Error:
`C:\Users\luowq\AppData\Local\Programs\Python\Python36\python3.exe F:/学习代码/study/python/imageCompareSvr/main.py
Traceback (most recent call last):
  File "F:/学习代码/study/python/imageCompareSvr/main.py", line 28, in <module>
    document.add_picture('./test.jpg',width=Inches(1.25))
  File "C:\Users\luowq\AppData\Local\Programs\Python\Python36\lib\site-packages\docx\document.py", line 79, in add_picture
    return run.add_picture(image_path_or_stream, width, height)
  File "C:\Users\luowq\AppData\Local\Programs\Python\Python36\lib\site-packages\docx\text\run.py", line 62, in add_picture
    inline = self.part.new_pic_inline(image_path_or_stream, width, height)
  File "C:\Users\luowq\AppData\Local\Programs\Python\Python36\lib\site-packages\docx\parts\document.py", line 93, in new_pic_inline
    cx, cy = image.scaled_dimensions(width, height)
  File "C:\Users\luowq\AppData\Local\Programs\Python\Python36\lib\site-packages\docx\image\image.py", line 159, in scaled_dimensions
    scaling_factor = float(width) / float(self.width)
  File "C:\Users\luowq\AppData\Local\Programs\Python\Python36\lib\site-packages\docx\image\image.py", line 127, in width
    return Inches(self.px_width / self.horz_dpi)
ZeroDivisionError: division by zero

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:5 (1 by maintainers)

Top GitHub Comments

1reaction

Swannbmcommented, Nov 1, 2020

I think it’s a True issue because in readthedoc it says that it should default to 72 DPI.

1reaction

floriaanpostcommented, Jul 1, 2020

In case anyone gets this error… It is “solved” by monkey patching the height and width of the Image class:

from docx.image.image import Image
from docx.shared import Inches

@property
def image_width(self):
    if (self.horz_dpi == 0):
        return Inches(self.px_width / 72)
    return Inches(self.px_width / self.horz_dpi)


@property
def image_height(self):
    if (self.vert_dpi == 0):
        return Inches(self.px_height / 72)
    return Inches(self.px_height / self.vert_dpi)


Image.width = image_width
Image.height = image_height

If don’t have a clue to why it is zero in the first place, as the images (in my case) do not appear to have an header, so it should default to 72 dpi.

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