check_profile.py

from profile import SimpleProfiler
import time

profiler = SimpleProfiler()
array = []

for index in range(10):
  profiler.timer_start()
  profiler.memory_start()
  array += list(range(10 ** 6))
  time.sleep(1)
  print("%d: %.1f seconds, %.1f%% memory percentage change, total percent %.1f" % (
    index, profiler.timer_check(), profiler.memory_check(), profiler.memory_percent()
  ))

profile.py

import os
import psutil
import time

class SimpleProfiler:
    def __init__(self):
        self.time = 0
        self.percent = 0
    def timer_start(self):
        self.time = time.perf_counter()
    def timer_check(self, reset=True):
        if self.time == 0:
            raise Exception('Timer not started')
        time_elapsed = time.perf_counter() - self.time
        if reset:
            self.time = 0
        return time_elapsed
    def memory_start(self):
        self.percent = psutil.Process(os.getpid()).memory_percent()
    def memory_percent(self):
        return psutil.Process(os.getpid()).memory_percent()
    def memory_check(self, reset=True):
        if self.percent == 0:
            raise Exception('Memory watcher not initialized')
        percent_change = psutil.Process(os.getpid()).memory_percent() - self.percent
        if reset:
            self.percent = 0
        return percent_change

sample_output.txt

0: 1.0 seconds, 0.2% memory percentage change, total percent 0.4
1: 1.0 seconds, 0.2% memory percentage change, total percent 0.6
2: 1.0 seconds, 0.2% memory percentage change, total percent 0.8
3: 1.0 seconds, 0.2% memory percentage change, total percent 1.1
4: 1.1 seconds, 0.2% memory percentage change, total percent 1.3
5: 1.1 seconds, 0.2% memory percentage change, total percent 1.5
6: 1.1 seconds, 0.2% memory percentage change, total percent 1.8
7: 1.1 seconds, 0.2% memory percentage change, total percent 2.0
8: 1.0 seconds, 0.2% memory percentage change, total percent 2.3
9: 1.1 seconds, 0.2% memory percentage change, total percent 2.5