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3 matches

Create Mock Watermarked Image Bytes in Python Without PIL

Builds a mock image-like byte stream with an embedded watermark using only stdlib modules, for testing pipelines without PIL.

watermark bytes zlib

Python

from io import BytesIO
import zlib
import struct


def create_watermarked_bytes(width: int, height: int, watermark: bytes) -> bytes:
    """Create a mock image-like byte stream with a watermark (no PIL)."""
    header = struct.pack("<2I", width, height)
    payload = watermark * max(1, (width * height // max(1, len(wa…

13 0 Open

Automation & scripting medium

How to Detect Recently Installed Software in Python

Uses subprocess to call pip and parse package metadata to list recently installed Python packages.

pip subprocess automation

Python

import subprocess
import sys
from datetime import datetime, timedelta

def detect_recently_installed(days=7):
    """Detect recently installed software packages."""
    recent_packages = []
    cutoff_date = datetime.now() - timedelta(days=days)
    
    try:
        # For pip-installed packages (Python packages)
    …

37 0 Open

Automation & scripting easy

How to Generate an Inventory CSV of Installed pip Packages in Python

This script uses subprocess and csv to list all installed pip packages and write their names and versions into a CSV inventory file.

pip csv subprocess

Python

import subprocess
import csv

def get_installed_packages():
    """Return a list of (name, version) tuples for installed pip packages."""
    result = subprocess.run(
        ["pip", "list", "--format=freeze"],
        capture_output=True,
        text=True,
        check=True
    )
    packages = []
    for line in r…

14 0 Open

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