﻿ Python: Count the occurrences of the items in a given list using lambda - w3resource # Python: Count the occurrences of the items in a given list using lambda

## Python Lambda: Exercise-49 with Solution

Write a Python program to count the occurrences of the items in a given list using lambda.

Sample Solution:

Python Code :

``````def count_occurrences(nums):
result = dict(map(lambda el  : (el, list(nums).count(el)), nums))
return result
nums = [3,4,5,8,0,3,8,5,0,3,1,5,2,3,4,2]
print("Original list:")
print(nums)
print("\nCount the occurrences of the items in the said list:")
print(count_occurrences(nums))
``````

Sample Output:

```Original list:
[3, 4, 5, 8, 0, 3, 8, 5, 0, 3, 1, 5, 2, 3, 4, 2]

Count the occurrences of the items in the said list:
{3: 4, 4: 2, 5: 3, 8: 2, 0: 2, 1: 1, 2: 2}
```

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## Python: Tips of the Day

Splits values into two groups. If an element in filter is True, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group

Example:

```def tips_bifurcate(lst, filter):
return [
[x for i, x in enumerate(lst) if filter[i] == True],
[x for i, x in enumerate(lst) if filter[i] == False]
]

print(tips_bifurcate(['little', 'boo', 'peep', 'sat'], [True, True, False, True]))
```

Output:

```[['little', 'boo', 'sat'], ['peep']]
```