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01. Define a function that adds two numbersE02. Write a function that returns a greetingE03. Implement a function to find the maximum of threeE04. Create a function to join words with a separatorE05. Write a function that returns the length of a sequenceE06. Implement a function with a default argumentE07. Create a function that accepts any number of argsE08. Write a function that handles keyword argumentsE09. Implement a function that returns multiple valuesE10. Write a function that modifies a passed listE11. Define a function that reads a global variableE12. Write a function with a simple docstringE13. Write a function that demonstrates nonlocal usageM14. Create a function factory returning customized functionsM15. Implement argument unpacking with *args and **kwargsM16. Write a function that avoids mutable default argsM17. Create a function with keyword-only parametersM18. Implement a simple recursive function with a base caseM19. Implement a decorator that logs function callsH20. Write a decorator that memoizes function resultsH

Problem No 12

Write a function with a simple docstring

Easy

≈ 6 minute session

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Summary

Create a small function and include a clear docstring describing its behavior.

Problem statement

Write a function multiply(a, b) that returns the product of a and b. Add a simple docstring to the function exactly: "Multiply two numbers and return the product." Ensure the function behavior matches the docstring and that multiply.__doc__ returns that exact string.

Task

Define a function with an exact docstring and correct behavior so learners practice writing documentation strings.

Examples

Multiply integers

Input

multiply(2, 3)

Output

6

Explanation

2 * 3 equals 6.

Input format

Two numeric values (integers or floats).

Output format

Return the numeric product of the two inputs.

Constraints

Include the exact docstring: "Multiply two numbers and return the product." The function must return a*b.

Samples

Sample input 0

multiply(2.5, 4)

Sample output 0

10.0

Explanation 0

2.5 * 4 equals 10.0.

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