magic_deco(arg)
The decorator can be used with or without arguments, as follows.
@deco def foo(...)
will create a line magic named :None:None:`foo`
.
with one string argument: which will be used as the actual name of the
resulting magic:
@deco('bar') def foo(...)
will create a line magic named :None:None:`bar`
.
To register a class magic use Interactiveshell.register_magic(class or instance)
.
Note: this decorator can only be used in a context where IPython is already active, so that the :None:None:`get_ipython()`
call succeeds. You can therefore use it in your startup files loaded after IPython initializes, but not in the IPython configuration file itself, which is executed before IPython is fully up and running. Any file located in the startup
subdirectory of your configuration profile will be OK in this sense.
Decorate the given function as line magic.
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