== Developing NumPy in-place ==

Compile the extensions in-place:

{{{
python setup.py build_ext -i
}}}

Install a sym-link to the numpy directory:

{{{
python setupegg.py develop --prefix=${HOME}
}}}

(Use the prefix if you prefer a local install, instead of contaminating the system-wide installation directory).

Now, changes you make to python files in the numpy directories will immediately be reflected upon module import.