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Files & data medium

Encrypt and Decrypt Files Using Python

Encrypt and decrypt files using the cryptography library's Fernet symmetric encryption.

encryption decryption fernet

Python

import os
from pathlib import Path
from cryptography.fernet import Fernet

def generate_key(key_file: Path) -> bytes:
    key = Fernet.generate_key()
    key_file.write_bytes(key)
    return key

def load_key(key_file: Path) -> bytes:
    return key_file.read_bytes()

def encrypt_file(input_path: Path, key: bytes, out…

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Guide: free Python code samples library

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PythonSkillset code samples are short, focused examples organised by topic and difficulty. Every snippet is server-rendered HTML — readable by search engines and easy to copy. Open any sample, read the notes, copy the code, then press Try in editor to run it in the browser with Pyodide.

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