﻿ Python: Cumulative sum of the elements of a given list - w3resource

# Python: Cumulative sum of the elements of a given list

## Python List: Exercise - 267 with Solution

Write a Python program to get the cumulative sum of the elements of a given list.

Sample Solution:

Python Code:

``````from itertools import accumulate
def cumsum(lst):
return list(accumulate(lst))
nums = [1,2,3,4]
print("Original list elements:")
print(nums)
print("Cumulative sum of the elements of the said list:")
print(cumsum(nums))
nums = [-1,-2,-3,4]
print("\nOriginal list elements:")
print(nums)
print("Cumulative sum of the elements of the said list:")
print(cumsum(nums))
```
```

Sample Output:

```Original list elements:
[1, 2, 3, 4]
Cumulative sum of the elements of the said list:
[1, 3, 6, 10]

Original list elements:
[-1, -2, -3, 4]
Cumulative sum of the elements of the said list:
[-1, -3, -6, -2]
```

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

Returns True if the provided function returns True for every element in the list, False otherwise:

Example:

```def tips_every(lst, fn=lambda x: x):
return all(map(fn, lst))

print(tips_every([2, 4, 3], lambda x: x > 1))
print(tips_every([1, 2, 3]))
```

Output:

```True
True
```