How to use IPython magic within a script to auto reload modules? [duplicate]

Question

I am trying to include some of the IPython built-in magic functions to auto reload modules when I am running a script. So I have tried this:

if __IPYTHON__: %load_ext autoreload %autoreload 2

But IPython returns:

%load_ext autoreload ^ SyntaxError: invalid syntax

Any idea how to solve this?

After %load_ext autoreload can you tab-complete %autoreload? — colidyre
– colidyre, Commented Oct 2, 2015 at 12:12
Another try could be to edit your ipython_config.py with c.InteractiveShellApp.extensions = ['autoreload'] and c.InteractiveShellApp.exec_lines = ['%autoreload 2']. This could not help, but it's worth a try. — colidyre
– colidyre, Commented Oct 2, 2015 at 12:16
@colidyre What do you mean by tab-complete?. Also I don't want to change the ipython_config.py because I want to implement this only on certain scripts, not all of them. — Jemme
– Jemme, Commented Oct 2, 2015 at 12:42
Tab completion is just e.g. to exclude non printable characters accidentally put in your console or to exclude import errors. You just type % and then press tabulator key. Then you should see (there is a chance that you don't have this feature) a list of possible commands. This is very basic and also very fast to check. You can also provide some version information (python and iPython). — colidyre
– colidyre, Commented Oct 2, 2015 at 13:06
@colidyre, I thought you were referring to something different. I know for sure both lines are fine because I can execute them directly in iPython, but when I include them on the script and run them from there, I get that error. It seems a problem with trying to use magic functions from a script. — Jemme
– Jemme, Commented Oct 3, 2015 at 11:57

Jemme · Accepted Answer · 2015-10-07 13:53:48Z

10

Thank you for the link Gall!!! Whit your help I came up with the following solution:

from IPython import get_ipython ipython = get_ipython() if '__IPYTHON__' in globals(): ipython.magic('load_ext autoreload') ipython.magic('autoreload 2')

answered Oct 7, 2015 at 13:53

Jemme

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2 Comments

zanbri Over a year ago

Thanks for this! You could even put the first two lines of code inside the if statement for better encapsulation.

gregory Over a year ago

ipython.magic is now deprecated, use run_line_magic instead

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