[IPython-dev] Sage customizations

Thomas Kluyver takowl at gmail.com
Tue Sep 11 17:59:21 EDT 2012

On 11 September 2012 22:24, Jason Grout <jason-sage at creativetrax.com> wrote:
> * transformations are stateless (they only depend on a single line, and
> shouldn't store state) --- what is the rationale behind this?  For
> example, we'd like to do a dedenting transformation (useful if we are
> pasting lots of text, after we turn off autoindenting, or even if we are
> pasting a lot of single commands with autoindenting).  Of course, to do
> a dedenting transformation, we need to know the indentation of the first
> line, so it is not stateless.  Looking at the IPython code, it would be
> trivial to pass the line number in with the line string to transformations.

Input transformations are still 'in progress' under IPEP 2. Sorry, I
haven't had much time to work on it lately. Please keep telling me
about use cases like this - I am building up ideas for how the
transformation machinery should work, although it's not in a concrete
form just yet.


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