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# Python program to calculate the sum of elements in a list

Hello everyone, I am back to discuss a new Python program. Here we learn how to sum all the elements in a list quite easily. We use a predefined function called `sum()` and apply it to the list, the function returns the sum of all the elements in a list. So lets calculate the sum of elements in a list.

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#### Video :

You can also watch the video on YouTube here

To find the sum of all the elements in a list.

#### Approach :

• Read the input number asking for the length of the list using `input()` or `raw_input()`.
• Initialize an empty list `lst = []`.
• Read each number using a `for loop`.
• In the for loop append each number to the list.
• Now we use a predefined function `sum()` to find the sum of all the elements in a list.
• Print the result.

#### Program :

```lst = []
num = int(input('How many numbers: '))
for n in range(num):
numbers = int(input('Enter number '))
lst.append(numbers)
print("Sum of elements in given list is :", sum(lst))```

#### Output :

That’s how we can calculate the sum of elements in a list.

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