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Read and write files safely; parse JSON, CSV, and common text formats.

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Files & data easy

How to Merge Dicts from Two JSON Files Like a Pro

This helper reads two JSON files that contain dicts, merges them with the second file overriding duplicate keys, and saves the result to a new file.

json dict merge
Python 
import json
from pathlib import Path


def merge_json_files(file1: str, file2: str, output: str = "merged.json") -> dict:
    """Merge two JSON files containing dicts, with file2 overriding file1."""
    data1 = json.loads(Path(file1).read_text())
    data2 = json.loads(Path(file2).read_text())

    merged = {**data1,…
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