﻿ Python: Merge some list items in given list using index value - w3resource

# Python: Merge some list items in given list using index value

## Python List: Exercise - 173 with Solution

Write a Python program to merge some list items in a given list using the index value.

Sample Solution:

Python Code:

``````def merge_some_chars(lst,merge_from,merge_to):
result = lst
result[merge_from:merge_to] = [''.join(result[merge_from:merge_to])]
return result
chars = ['a', 'b', 'c', 'd', 'e', 'f', 'g']
print("Original lists:")
print(chars)
merge_from = 2
merge_to = 4
print("\nMerge items from",merge_from,"to",merge_to,"in the said List:")
print(merge_some_chars(chars,merge_from,merge_to))
chars = ['a', 'b', 'c', 'd', 'e', 'f', 'g']
merge_from = 3
merge_to = 7
print("\nMerge items from",merge_from,"to",merge_to,"in the said List:")
print(merge_some_chars(chars,merge_from,merge_to))
```
```

Sample Output:

```Original lists:
['a', 'b', 'c', 'd', 'e', 'f', 'g']

Merge items from 2 to 4 in the said List:
['a', 'b', 'cd', 'e', 'f', 'g']

Merge items from 3 to 7 in the said List:
['a', 'b', 'c', 'defg']
```

Pictorial Presentation: Flowchart: ## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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﻿

## Python: Tips of the Day

Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:

Example:

```def tips_check_prop(fn, prop):
return lambda obj: fn(obj[prop])
check_age = tips_check_prop(lambda x: x >= 25, 'age')
user = {'name': 'Owen', 'age': 25}

print(check_age(user))
```

Output:

```True
```

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