Fixed number of decimal places in Python

The most idiomatic and ideologically correct way:

result = [int(item) for item in a]

For fans of functional style:

result = list(map(int, a))

Here the map function applies the int function to each element of the object a, then the result is converted to a list.

This option is considered less "Pythonic", but it also has a right to exist (at the very least, in many cases the map notation is more compact than the list comprehension option).