Python

Timer

from contextlib import contextmanager
import time

@contextmanager
def timer(name):
    t0 = time.time()
    yield
    print(f'[{name}] done in {time.time() - t0:.0f} s')

# timer example
with timer('process stuff'):
    do_something()

CPU stats

# cpu stats
import os, psutil
def cpu_stats():
    pid = os.getpid()
    py = psutil.Process(pid)
    memoryUse = py.memory_info()[0] / 2. ** 30
    print('memory GB:', memoryUse)

Create a decorator

from functools import wraps

def some_decorator(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        print(args, kwargs)
        # do things
        return f(*args, **kwargs)
    return decorated_function

@some_decorator
def do_sth(a, b, c):
    pass