print(range(10)) print(list(range(10, 0, -1))) t1 = (1,2) t1 t1[1] t2 = (1, 2, 'green', ['Berlin','Warsaw','Paris']) t2 t2[3][2] (*t2, 99) (t2 + (99,)) healthy = {'vegetables', 'bread', 'milk', 'eggs'} drinks = {'beer', 'caffe', 'tea', 'milk'} 'milk' in drinks 'chips' in healthy healthy | drinks healthy & drinks pricelist = { 'milk' : 2, 'bread': 4, 'butter': 3 } pricelist for k,v in pricelist.items(): print(k, v) for k in pricelist.keys(): print(k, pricelist[k]) pricelist['bread']
import time max_limit = 50000 my_list = list(range(max_limit)) my_set = set(range(max_limit)) # checking time for list search start = time.time() for p in range(max_limit): is_present = p in my_list stop = time.time() print(f'List search operation duration was {stop - start}') # checking time for set search start = time.time() for p in range(max_limit): is_present = p in my_set stop = time.time() print(f'Set search operation duration was {stop - start}')