Python Decorators | Dataford Interview Questions

What is a decorator in python.

Implement count_calls(function_source, calls), which applies a decorator to the function defined by function_source. The decorator must count invocations, preserve the original function name, execute each requested call, and return the results with the final count. Each call contains positional arguments in args and keyword arguments in kwargs.

The function returns a dictionary with returns, call_count, and name. Function sources contain one standard Python function definition and use only built-in operations.

Constraints

function_source contains exactly one standard Python function definition
The function has a unique name and uses only built-in operations
calls contains zero or more objects with args as a list and kwargs as a dictionary
Each requested call is valid for the supplied function
Return values are JSON-compatible

Function Signature

def count_calls(function_source, calls):

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Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

What is a decorator in python.

The function returns a dictionary with returns, call_count, and name. Function sources contain one standard Python function definition and use only built-in operations.

Constraints

function_source contains exactly one standard Python function definition
The function has a unique name and uses only built-in operations
calls contains zero or more objects with args as a list and kwargs as a dictionary
Each requested call is valid for the supplied function
Return values are JSON-compatible

Function Signature

def count_calls(function_source, calls):

Your question is Python Decorators. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.