Планировщик задач встроенный в Python

import sched
import time
from datetime import datetime, timedelta

scheduler = sched.scheduler(timefunc=time.time)

def saytime():
print(time.ctime())
scheduler.enter(10, priority=0, action=saytime)

saytime()
try:
scheduler.run(blocking=True)
except KeyboardInterrupt:
print('Stopped.')

Цветовое оформление логов

import colorlog

logger = colorlog.getLogger()
logger.setLevel(colorlog.colorlog.logging.DEBUG)

handler = colorlog.StreamHandler()
handler.setFormatter(colorlog.ColoredFormatter())
logger.addHandler(handler)

logger.debug("Debug message")
logger.info("Information message")
logger.warning("Warning message")
logger.error("Error message")
logger.critical("Critical message")

Интерактивная графика на Python - pyqtgraph

dominate lets you create HTML with a series of nested context handlers

Инфа по процессору, памяти, диску и сети psutil

import psutil
import os, sys, time

pid = os.getpid()
p = psutil.Process(pid)

print('Process info:')
print(' name :', p.name())
print(' exe :', p.exe())

data = []
while True:
data += list(range(100000))
info = p.memory_full_info()
# Convert to MB
memory = info.uss / 1024 / 1024
print('Memory used: {:.2f} MB'.format(memory))
if memory > 40:
print('Memory too big! Exiting.')
sys.exit()
time.sleep(1)

Кроссплатформенный мониторинг изменений файловой системы watchdog

from watchdog.observers import Observer
from watchdog.events import (PatternMatchingEventHandler, FileModifiedEvent, FileCreatedEvent)

observer = Observer()
class Handler(PatternMatchingEventHandler):
def on_created(self, event: FileCreatedEvent):
print('File Created: ', event.src_path)
def on_modified(self, event: FileModifiedEvent):
print('File Modified: %s [%s]' % (
event.src_path, event.event_type))

observer.schedule(event_handler=Handler('*'), path='.')
observer.daemon = False
observer.start()

try:
observer.join()
except KeyboardInterrupt:
print('Stopped.')
observer.stop()
observer.join()

API maker - hug

hug is a library that provides an extremely simple way to create
Internet APIs for web services.

Date times

arrow - работа со временем без оглядки на timezones

Время в человеческом виде

>>> t0 = arrow.now()
>>> t0.humanize()
'just now'

>>> t0.humanize()
'seconds ago'

>>> t0 = t0.replace(hours=-3,minutes=10)
>>> t0.humanize()
'2 hours ago'