Reference library

Files & data

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

1 match
Files & data easy

Sync only changed files between two folders in Python

This code compares two folders and copies only the new or modified files from source to destination, skipping unchanged ones by comparing SHA-256 hashes.

files sync hashing
Python 
import hashlib
from pathlib import Path
import shutil

def file_hash(path: Path, chunk_size: int = 8192) -> str:
    hasher = hashlib.sha256()
    with path.open("rb") as f:
        for chunk in iter(lambda: f.read(chunk_size), b""):
            hasher.update(chunk)
    return hasher.hexdigest()

def sync_files(src: s…
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