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Q&A How do I trim a sorted list in Python?

You can use the functions in the bisect module with a list slicing operator. For example bisect_left finds the index of the insertion point in a sorted list, and if the values are equal, it will fi...

posted 6mo ago by congusbongus‭

Answer
#1: Initial revision by user avatar congusbongus‭ · 2024-05-31T01:47:30Z (6 months ago)
You can use the functions in the [`bisect`](https://docs.python.org/3/library/bisect.html) module with a list slicing operator. For example `bisect_left` finds the index of the insertion point in a sorted list, and if the values are equal, it will find the position to its left.

```
>>> l = [1, 3, 5, 6, 7, 8]
>>> from bisect import bisect_left
>>> bisect_left(l, 4)
2
>>> bisect_left(l, 5)
2
>>> l[bisect_left(l, 4):]
[5, 6, 7, 8]
>>> l[bisect_left(l, 5):]
[5, 6, 7, 8]
```