Exploring the Nested Lists with a Generator Function
How can we extract elements from nested lists using a generator function?
Let's delve into the concept of generator functions and nested lists to uncover an efficient way of retrieving elements.
Answer:
The `nested()` function is a generator function that takes a list of lists as an argument and returns all the elements from the nested lists in order.
The generator function `nested()` takes a list of lists as an argument and returns all the elements from the nested lists in order. Here is how you can implement the function:
```python def nested(lst): for sublist in lst: for element in sublist: yield element ```
Let's break down the implementation step-by-step:
- We define the generator function `nested()` that takes a list of lists, `lst`, as the argument.
- We use a `for` loop to iterate over each sublist in the input list `lst`.
- Within the loop, we use another `for` loop to iterate over each element in the current sublist.
- We use the `yield` keyword to generate and return each element from the nested lists one at a time. This allows us to create a generator object that can be iterated over.
- The generator function continues to yield elements until there are no more elements left in the nested lists.
To use the `nested()` function and retrieve all the elements from the nested lists, you can do the following:
```python nested_list = [[1], [2, 3], [4, 5, 6]] result = list(nested(nested_list)) print(result) ```
Output:
```[1, 2, 3, 4, 5, 6]```
In conclusion, the `nested()` function is a generator function that takes a list of lists as an argument and returns all the elements from the nested lists in order.