17 lines
306 B
Markdown
17 lines
306 B
Markdown
---
|
|
title: difference
|
|
tags: list
|
|
---
|
|
Returns the difference between two iterables.
|
|
|
|
Use list comprehension to only keep values not contained in `b`.
|
|
|
|
```python
|
|
def difference(a, b):
|
|
_b = set(b)
|
|
return [item for item in a if item not in _b]
|
|
```
|
|
``` python
|
|
difference([1, 2, 3], [1, 2, 4]) # [3]
|
|
```
|