Sum three numbers
Input
sum_all(1, 2, 3)
Output
6
1 + 2 + 3 equals 6.
Full lesson preview
Create a function that accepts any number of args
Use *args to accept a variable number of positional arguments and process them.
Python practice6 minFunctions & ScopeBeginnerLast updated March 17, 2026
Problem statement
Implement sum_all(*args) which accepts zero or more numeric positional arguments and returns their sum. The function should handle integers and floats and return 0 when called with no arguments.
Task
Write a function sum_all that accepts any number of positional numeric arguments and returns their sum. If no arguments are given, return 0.
Examples
Input format
A variable number of positional numeric arguments (ints or floats).
Output format
A single number: the sum of the provided arguments (0 if none).
Constraints
Do not use external libraries. The function should work with int and float inputs.
Samples
Sample 1
Input
sum_all()
Output
0
No arguments provided, so the sum is 0.