#0111

Nested Get With Dict Keys and List Indexes

MediumPython25 min20 XP

Problem

Given data, a path containing dictionary keys or list indexes, and default, walk the path. Return default if a key/index is missing or the type does not match.

Why This Matters

Real API responses mix dictionaries and lists. Safe traversal prevents brittle key/index errors in scripts and data pipelines.

Function Signature

def deep_get(data, path, default=None):

Examples

Example 1

Input{"users": [{"name": "Asha"}]}, ["users", 0, "name"]

Output"Asha"

The path enters a dict, then list index 0, then another dict.

Constraints

Return the requested value exactly.
Handle the stated edge cases.
Keep the solution readable.

CodePython

def deep_get(data, path, default=None):
    """
    Input example: {"users": [{"name": "Asha"}]}, ["users", 0, "name"]
    Return: "Asha"
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return default

def deep_get(data, path, default=None):
    """
    Input example: {"users": [{"name": "Asha"}]}, ["users", 0, "name"]
    Return: "Asha"
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return default

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Input{"users": [{"name": "Asha"}]}, ["users", 0, "name"]

Expected"Asha"

The path enters a dict, then list index 0, then another dict.

Hidden Test Categories

empty pathwrong type in middlenegative index rejected