Start index for iterating Python list

python iteration
Vincent Catalano picture Vincent Catalano · May 27, 2011 · Viewed 164.5k times · Source

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

Björn Pollex picture Björn Pollex · May 27, 2011

You can use slicing:

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

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

Related questions

Iterating each character in a string using Python

In C++, I can iterate over an std::string like this: std::string str = "Hello World!"; for (int i = 0; i < str.length(); ++i) { std::cout << str[i] << std::endl; } How do I iterate over a …

Read More
How to remove items from a list while iterating?

I'm iterating over a list of tuples in Python, and am attempting to remove them if they meet certain criteria. for tup in somelist: if determine(tup): code_to_remove_tup What should I use in place of code_to_…

Read More
How do I loop through a list by twos?

I want to loop through a Python list and process 2 list items at a time. Something like this in another language: for(int i = 0; i < list.length(); i+=2) { // do something with list[i] and list[i + 1] } What's the best …

Read More