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Suppose I have the following org file (pdguide.org):

* Creating a Pandas =DataFrame=
  The pandas =DataFrame= can be created by loading the data from the external, existing storage like a database, SQL or CSV files. But the pandas =DataFrame= can also be created from the lists, dictionary, etc. One of the ways to create a pandas data frame is shown below:
  - import pandas library
    #+begin_src python
    import pandas as pd
    #+end_src
  - Dictionary of key pair values called data
    #+begin_src python
    data = {'Name':['NickD', 'John', 'Sam', 'crocefisso', 'Debbie'],
         'Age': [24, 23, 22, 19, 10]}
    #+end_src
  - Calling the pandas DataFrame method by passing the dictionary (data) as a parameter
    #+begin_src python
    df = pd.DataFrame(data)
    df
    #+end_src

How can I export it to a pdguide.py so the parts that are not code blocks become comments?

Also would it be possible to have it exported as pdguide.ipynb so the part that are not code blocks become markdown?

4
  • 1
    Please don't use images. Org mode is plain text, so you can cut and paste it into a markdown code block
    – NickD
    Nov 17, 2020 at 18:48
  • I already erased the org I wrote for the screenshot. I have tried to edit it as code, but it didn't work since it was transformed in md.
    – crocefisso
    Nov 17, 2020 at 18:52
  • See the link and my answer for how to do it: all you have to do is surround it with two lines, each containing three backticks, one before the code and one after.
    – NickD
    Nov 17, 2020 at 18:55
  • I added a small section of the text from your image as a markdown code block to illustrate the method. Hope it helps. Fee free to delete it (although I hope you will instead expand it to contain all the text in your image and get rid of the image instead ;-) ).
    – NickD
    Nov 18, 2020 at 3:59

1 Answer 1

3

The process is called tangling.

All you have to do is provide a header arg to specify that, e.g.:

#+PROPERTY: header-args:python :tangle pdguide.py

After you add the line to your buffer, don't forget to refresh it by typing C-c C-c on the property line.

Then you can tangle the code into the file with C-c C-v C-t.

EDIT: you can include the nearest headline as comments (from the headline to the text before the code block) by using :comments both as a header arg: that will include the headline as a comment and will provide links back to the Org mode file for each code block. You can use :comments org for just the headline, or :comment link for just the links.

As for your last question: "Also would it be possible to have it exported as pdguide.ipynb so the part that are not code blocks become markdown?", AFAIK the answer is no. EDIT: The OP points out in a comment that something like this might be possible using John Kitchin's 'ipynb' exporter.

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  • When I tangle code, a .py is generated but without any comments.
    – crocefisso
    Nov 17, 2020 at 19:02
  • As I said I wanted all the none code blocks to be exported as comments. In Python comments begin with a hash mark ( # ).
    – crocefisso
    Nov 17, 2020 at 19:21
  • Edited the answer with some info: a small step towards what you want but certainly not the whole thing.
    – NickD
    Nov 17, 2020 at 19:30
  • Thx, :comments org works than :comments both though. As for ipynb export, I found this module github.com/jkitchin/ox-ipynb but didn't test it yet.
    – crocefisso
    Nov 17, 2020 at 19:59
  • So here is the full line #+PROPERTY: header-args :python :comments org :tangle filename.py
    – crocefisso
    Nov 17, 2020 at 20:00

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