Files & data

import csv
import statistics
from math import sqrt

def detect_outliers(csv_path, column_name, threshold=2.0):
    """Detect outliers in a numeric column using z-score method."""
    values = []
    with open(csv_path, 'r', newline='') as f:
        reader = csv.DictReader(f)
        if column_name not in reader.field…

import os
import glob
from pathlib import Path

def rotate_log(log_path, max_size_bytes=1024, max_backups=3):
    log_file = Path(log_path)
    if log_file.stat().st_size <= max_size_bytes:
        print(f"Log size {log_file.stat().st_size} bytes <= threshold, no rotation")
        return

    for i in range(max_backu…