﻿ Python Exercise: Find the sum of all the numbers in a list - w3resource # Python Exercise: Find the sum of all the numbers in a list

## Python Functions: Exercise-2 with Solution

Write a Python function to sum all the numbers in a list.

Sample Solution:-

Python Code:

``````def sum(numbers):
total = 0
for x in numbers:
total += x
print(sum((8, 2, 3, 0, 7)))
```
```

Sample Output:

```20
```

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Python Code Editor:

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## Python: Tips of the Day

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value

Example:

```def tips_map_values(obj, fn):
ret = {}
for key in obj.keys():
ret[key] = fn(obj[key])
return ret
users = {
'Owen': { 'user': 'Owen', 'age': 29 },
'Eddie': { 'user': 'Eddie', 'age': 15 }
}

print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}
```

Output:

```{'Owen': 29, 'Eddie': 15}
```