Start index for iterating Python list

Question

What is the best way to set a start index when iterating a list in Python. For example, I have a list of the days of the week - Sunday, Monday, Tuesday, ... Saturday - but I want to iterate through the list starting at Monday. What is the best practice for doing this?

Answer 1

You can use slicing:

for item in some_list[2:]:     # do stuff 

This will start at the third element and iterate to the end.

Answer 2

islice has the advantage that it doesn't need to copy part of the list

from itertools import islice for day in islice(days, 1, None):     ...