@mrocklin sure, but you should be able to as well...
```
alst  = range(100000)

In [11]: %timeit map(lambda a: a + 1, alst)
100 loops, best of 3: 11.9 ms per loop

In [12]: %timeit map(lambda a: (a+1, ), alst)
100 loops, best of 3: 17.4 ms per loop

In [14]: %timeit map(lambda a: a + 1, alst)
1 loops, best of 3: 1.2 s per loop

In [15]: %timeit map(lambda a: (a+1, ), alst)
1 loops, best of 3: 2.2 s per loop
```

@spearsem yes we could do that.