Check if all elements of a list are of the same type

Question

How can I check if the elements of a list are of the same type, without checking individually every element if possible?

For example, I would like to have a function

Answer 1

I prefer to use map for a case like this:

from types import IntType
In [21]: map((lambda x: isinstance(x, IntType)), x)
   Out[21]: [True, False, False]