set ipython's default scientific notation threshold

Question

How can I modify the point at which python decides to print in scientific notation?

E.g. I\'d like everything > 1e4 or < 1e-4 to be p

Answer 1

Actually it has nothing to do with IPython as it simply calls __str__. Sadly, float, being a built-in type, is implemented in C and you can't monkeypatch C types. So your only options are modifying __str__ implementation in cpython or patching IPython to be smarter than just calling __str__.