future.builtins — Python-Future documentation

# `future.builtins`

The `future.builtins` module is also accessible as `builtins` on Py2.

- `pow()` supports fractional exponents of negative numbers like in Py3:

      >>> from builtins import pow
      >>> pow(-1, 0.5)
      (6.123233995736766e-17+1j)

- `round()` uses Banker’s Rounding as in Py3 to the nearest even last digit:

      >>> from builtins import round
      >>> assert round(0.1250, 2) == 0.12