purepy.py

#!/usr/bin/env python
import random
from collections import Counter


def counter_1():
    items = [random.randint(0, 10) for i in range(10000)]
    return Counter(items)


def counter_2():
    items = [random.randint(0, 10) for i in range(10000)]
    counter = {}
    for item in items:
        if item not in counter:
            counter[item] = 0
        else:
            counter[item] += 1
            return counter


def loop():
    res = []
    for i in range(100000):
        res.append(i * i)
    return sum(res)


def comprehension():
    return sum([i * i for i in range(100000)])


def generator():
    return sum(i * i for i in range(100000))