This article demonstrates how to use Python's sys module to access interpreter information, argparse for parsing command‑line arguments, and logging for flexible log handling, providing clear code examples for each feature.
This article provides practical code examples for using key Python standard library modules—including os, sys, json, datetime, re, math, collections, urllib, random, and logging—to perform common tasks such as file operations, system info, data parsing, date handling, pattern matching, calculations, data structures, web requests, random generation, and logging.
This article demonstrates how to reproduce disk‑IO saturation in MySQL, enable performance_schema instruments and consumers, apply load, and use sys.x$latest_file_io together with events_waits_history_long to pinpoint whether binlog, redo log, or specific tables are causing the slowdown.
This guide walks you through Python's built‑in open() function, file modes, reading and writing techniques, directory traversal with os.walk, and a series of practical scripts including a triangle printer, number‑guessing game, log analysis, IP counting, prime number generator, command‑line argument handling, web page fetching, process memory aggregation, port monitoring, and SNMP‑based CPU and network traffic monitoring.
This comprehensive guide walks you through Python's exception classes, various try‑except‑else‑finally patterns, handy shortcuts like assert and with, how to raise custom exceptions, and retrieving exception details via the sys module, all illustrated with clear examples and diagrams.
