max value in list

[Peter Otten]

C GIllespie wrote:

> I have a few lists. What's the best way of finding the maximum number of
> all the lists.
> 
> For example,
> 
> [2,3,4],[1,2,3],[4,7]
> 
> The max is 7.

For arbitrarily nested sequences:

>>> def rmax(seq):
...     try:
...             return max(map(rmax, seq))
...     except TypeError:
...             return seq
...
>>> rmax(1)
1
>>> rmax([1,2])
2
>>> rmax([[1,2], [3,4]])
4
>>> rmax([[1,2], [3,44], 5, [6]])
44
>>> rmax([[1,2], [[3,44], 5, [6]]])
44
>>>

Peter