# Python: Find the value of the first element in the given list that satisfies the provided testing function

## Python List: Exercise - 239 with Solution

Write a Python program to find the value of the first element in the given list that satisfies the provided testing function.

Use a list comprehension and next() to return the first element in lst for which fn returns True.

**Sample Solution:**

**Python Code:**

```
def find(lst, fn):
return next(x for x in lst if fn(x))
print(find([1, 2, 3, 4], lambda n: n % 2 == 1))
print(find([1, 2, 3, 4], lambda n: n % 2 == 0))
```

Sample Output:

1 2

**Flowchart:**

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**Python Code Editor:**

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**Previous:** Write a Python program to calculate the average of a given list, after mapping each element to a value using the provided function.

**Next:** Write a Python program to find the value of the last element in the given list that satisfies the provided testing function.

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## Python: Tips of the Day

**Chunks a list into smaller lists of a specified size:**

Example:

from math import ceil def tips_chunk(lst, size): return list( map(lambda x: lst[x * size:x * size + size], list(range(0, ceil(len(lst) / size))))) print(tips_chunk([1, 2, 3, 4, 5, 6], 3))

Output:

[[1, 2, 3], [4, 5, 6]]

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