I have a PDF file that was created from a Jupyter notebook, but the original .ipynb file is lost.
Is there some tool that would help to convert PDF to .ipynb?
that may not be possible since .ipynb file contains pieces of code that requires for it to execute in jupyter notebook ..so the best option is to try to copy the contents from the pdf on to new .ipynb file and execute it.
PDF to Python is straightforward, but it takes several steps. Essentially you must extract the code to text format and then parse and clean it up to get it back into an executable format.
Save the PDF as text file. Adobe Acrobat does this well, but there are several Python PDF libraries to extract text from any PDF.
parse the text to identify and capture the Python code (as text strings)
Convert the Python text strings to Python tokens.
Clean or lint the Python code to format it so that it will run without errors due to indentation. You can use the Python "black" module or PEP8 linter to clean up indentation.
There are numerous examples of parsing Python in HTML format to Jupyter Notebook format. Spyder and VSCode linters work well to fix indentation.
Not possible to convert pdf into ipynd. But you can use google lens it will help you in copy pasting.
I am working with Python 3.6.6 and need to display several pdf-files in the browser.
I tried several pdf files and got 2 different results.
For example:
import webbrowser
webbrowser.open('https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference.pdf')
opens a new tab in my browser and displays the file.
Other files are downloaded immediatelly, instead of displaying in a new tab in the browser.
I want to know the reason for, why some files are downloaded automatically and others are displayed in the browser, where I can manually download the file.
I need a solution where I can force the file to open in the browser.
I already read through this question but it seems it is more restricted to HTML.
One last thing I noticed. If I try to download any pdf file from the internet it opens the file in a new tab. The problem with downloading them only appears with files which are saved on a webserver within my company.
Is this just a missing configuration on the webserver?
If yes, is it anyhow possible to get around this configuration using python?
It's the web-browser's decision whether to put the file in the downloads directory (and not display it) or whether to cache the file and open it in-browser. As such, do not use the web-browser installed on the end-user's system.
Instead, have your program include its own web-browser. Open the pdf (and everything else your program displays) in your program's web-browser. That way, you can always modify your program's web-browser to view files in-browser instead of saving to the downloads directory.
Several free open-source web-browsers are available on the market. Just use one of them.
I was using the turtle module with Python to make a project. In the project, an image is displayed, with this line:
screen.bgpic("image.png")
This worked at first, but then I copied the files (both the python file and image.png) onto a flash drive. I tested it on another computer, and it worked fine there, but when I saved it onto the actual computer that I needed it to be on, it didn't work.
I know it's not a problem with the actual turtle, since it works before that part. I also am pretty sure it isn't a file problem since the same file worked before. It says:
Couldn't recognize data in image file "image.png"
Older versions of tkinter don't support .png files.
You can convert GIF or JPEG or another image file type with an external tool.
So I found this great visualization of Newton's unconstrained optimization on a Jupyter Notebook within Louis Tiao's public account, and I want to run it on my laptop.
With other platforms, I'd be able to just copy and paste (including the annotations), and get it ready to "play". But with Notebook, I have to deal with multiple cells, and copy and paste each one separately, and in order.
Is there a more expeditious way of transferring the code?
A jupyter notebook is stored in a file with a .ipynb extension. The internals of the file a specially formatted text called json (or similar to it).
Right click the link and save as name.ipynb (it defaults to this in windows on chrome) and choose a location to save it. The best location is one where you have all your notebooks by default.
Then run jupyter and open the file.
I am starting to depend heavily on the IPython notebook app to develop and document algorithms. It is awesome; but there is something that seems like it should be possible, but I can't figure out how to do it:
I would like to insert a local image into my (local) IPython notebook markdown to aid in documenting an algorithm. I know enough to add something like <img src="image.png"> to the markdown, but that is about as far as my knowledge goes. I assume I could put the image in the directory represented by 127.0.0.1:8888 (or some subdirectory) to be able to access it, but I can't figure out where that directory is. (I'm working on a mac.) So, is it possible to do what I'm trying to do without too much trouble?
Most of the answers given so far go in the wrong direction, suggesting to load additional libraries and use the code instead of markup. In Ipython/Jupyter Notebooks it is very simple. Make sure the cell is indeed in markup and to display a image use:
Further advantage compared to the other methods proposed is that you can display all common file formats including jpg, png, and gif (animations).
Files inside the notebook dir are available under a "files/" url. So if it's in the base path, it would be <img src="files/image.png">, and subdirs etc. are also available: <img src="files/subdir/image.png">, etc.
Update: starting with IPython 2.0, the files/ prefix is no longer needed (cf. release notes). So now the solution <img src="image.png"> simply works as expected.
I am using ipython 2.0, so just two line.
from IPython.display import Image
Image(filename='output1.png')
Getting an image into Jupyter NB is a much simpler operation than most people have alluded to here.
Simply create an empty Markdown cell.
Then drag-and-drop the image file into the empty Markdown cell.
The Markdown code that will insert the image then appears.
For example, a string shown highlighted in gray below will appear in the Jupyter cell:
Then execute the Markdown cell by hitting Shift-Enter. The Jupyter server will then insert the image, and the image will then appear.
I am running Jupyter notebook server is: 5.7.4 with Python 3.7.0 on Windows 7.
This is so simple !!
UPDATE AS OF March 18, 2021:
This simple "Drag-and-Drop-from-Windows-File-System" method still works fine in JupyterLab. JupyterLab inserts the proper HTML code to embed the image directly and permanently into the notebook so the image is stored in the .ipynb file. I am running Jupyter Lab v2.2.7 on Windows 10 Python 3.7.9 still works in JupyterLab. I am running Jupyter Lab v2.2.7 using Python 3.7.9 on Windows 10.
This stopped working in Jupyter Classic Notebook v6.1.5 sometime last year. I reported an bug notice to the Jupyter Classic Notebook developers.
It works again in the latest version of Jupyter Classic Notebook. I just tried it in v6.4 on 7/15/2021. Thank you Jupyter NB Classic Developers !!
If you want to display the image in a Markdown cell then use:
<img src="files/image.png" width="800" height="400">
If you want to display the image in a Code cell then use:
from IPython.display import Image
Image(filename='output1.png',width=800, height=400)
[Obsolete]
IPython/Jupyter now has support for an extension modules that can insert images via copy and paste or drag & drop.
https://github.com/ipython-contrib/IPython-notebook-extensions
The drag & drop extension seems to work in most browsers
https://github.com/ipython-contrib/IPython-notebook-extensions/tree/master/nbextensions/usability/dragdrop
But copy and paste only works in Chrome.
I put the IPython notebook in the same folder with the image. I use Windows. The image name is "phuong huong xac dinh.PNG".
In Markdown:
<img src="phuong huong xac dinh.PNG">
Code:
from IPython.display import Image
Image(filename='phuong huong xac dinh.PNG')
First make sure you are in markdown edit model in the ipython notebook cell
This is an alternative way to the method proposed by others <img src="myimage.png">:
It also seems to work if the title is missing:
Note no quotations should be in the path. Not sure if this works for paths with white spaces though!
Change the default block from "Code" to "Markdown" before running this code:
If image file is in another folder, you can do the following:
Last version of jupyter notebook accepts copy/paste of image natively
For those looking where to place the image file on the Jupyter machine so that it could be shown from the local file system.
I put my mypic.png into
/root/Images/mypic.png
(that is the Images folder that shows up in the Jupyter online file browser)
In that case I need to put the following line into the Markdown cell to make my pic showing in the notepad:
minrk's answer is right.
However, I found that the images appeared broken in Print View (on my Windows machine running the Anaconda distribution of IPython version 0.13.2 in a Chrome browser)
The workaround for this was to use <img src="../files/image.png"> instead.
This made the image appear correctly in both Print View and the normal iPython editing view.
UPDATE: as of my upgrade to iPython v1.1.0 there is no more need for this workaround since the print view no longer exists. In fact, you must avoid this workaround since it prevents the nbconvert tool from finding the files.
I never could get "insert image" into a markdown cell to work. However, the drag and drop entered the png file saved in the same directory as my notebook. It brought this text into the cell
""
The shift + enter > image is now displayed in notebook.
FWIW
You can find your current working directory by 'pwd' command in jupyter notebook without quotes.