Example - joining two names
Input
join_names('Ada', 'Lovelace')
Output
Ada Lovelace
Join 'Ada' and 'Lovelace' with a space between them.
Full lesson preview
Concatenate Strings
Learn how to join strings by concatenation and return the combined result.
Python practice10 minVariables & Data TypesBeginnerLast updated December 29, 2025
Problem statement
Implement join_names(first, last) that returns a single string combining first and last name separated by a single space. The function should not modify the inputs aside from joining them with a space.
Task
Write a function that combines two name parts into a single string with a space between them.
Examples
Input format
Two string parameters: first and last.
Output format
A single string that is the concatenation of first, a space, then last.
Constraints
Do not add extra spaces beyond one between the names. Handle empty strings by still returning the single space when appropriate (e.g., '' + 'Smith' -> ' Smith').
Samples
Sample 1
Input
join_names('John', 'Doe')
Output
John Doe
Returns the two names joined by one space.