re-import aliased/shadowed python built-in methods

Question

If one has run

from numpy import *

then the built-in all, and several other functions, are shadowed by numpy fun

Answer 1

you can just do

all = __builtins__.all

The statement from numpy import * basically do two separate things

1. imports the module numpy
2. copies all the exported names from the module to the current module

by re-assigning the original value from __builtins__ you can restore the situation for the functions you need.

Answer 2

You can correct these en masse by re-importing the builtins:

In [1]: all
Out[1]: <function all>

In [2]: from numpy import *

In [3]: all
Out[3]: <function numpy.core.fromnumeric.all>

In [4]: from __builtin__ import *

In [5]: all
Out[5]: <function all>