'%i'

            In [5]: pi
            Out[5]: 3

            In [6]: %precision %e
            Out[6]: u'%e'

            In [7]: pi**10
            Out[7]: 9.364805e+04

            In [8]: %precision
            Out[8]: u'%r'

            In [9]: pi**10
            Out[9]: 93648.047476082982
        rp