﻿ Python: Create a list with the non-unique values filtered out - w3resource

# Python: Create a list with the non-unique values filtered out

## Python List: Exercise - 223 with Solution

Write a Python program to create a list with non-unique values filtered out.

• Use collections.Counter to get the count of each value in the list.
• Use a list comprehension to create a list containing only the unique values.

Sample Solution:

Python Code:

``````from collections import Counter
def filter_non_unique(lst):
return [item for item, count in Counter(lst).items() if count == 1]
print(filter_non_unique([1, 2, 2, 3, 4, 4, 5]))
```
```

Sample Output:

```[1, 3, 5]
```

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Python Code Editor:

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## Python: Tips of the Day

Decapitalizes the first letter of a string:

Example:

```def tips_decapitalize(s, upper_rest=False):
return s[:1].lower() + (s[1:].upper() if upper_rest else s[1:])
print(tips_decapitalize('PythonTips'))
print(tips_decapitalize('PythonTips', True))
```

Output:

```pythonTips
pYTHONTIPS
```

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