LeperGnome

import json
from lxml import html
import pandas as pd
import random
import re
import requests as req
import time


base_url = 'https://lc-pro.ru'

LeperGnome

def search_pairs(array, k):
    seen = {}
    pairs = []
    for idx, num in enumerate(array):
        comp_idx = seen.get(k-num, None)
        if comp_idx is not None:
            comp = array[comp_idx]
            pair = (min(num, comp), max(num, comp))
            pairs.append(pair)
        seen[num] = idx