# unpacking values for even numbers in list comprehension<br /> x, y, z = (i*i+i for i in range(6) if i%2==0)<br /> x, y, z

#When we create a tuple, we normally assign values to it.<br /> #This is called “packing” a tuple:</p> <p>#Packing a tuple:<br /> fruits = (“apple”, “banana”, “cherry”)</p> <p>#But, in Python, we are also allowed to extract the values back into variables.<br /> #This is called “unpacking”:</p> <p>#Unpacking a tuple:<br /> fruits = (“apple”, “banana”, “cherry”)</p> <p>(green, yellow, red) = fruits</p> <p>print(green)<br /> print(yellow)<br /> print(red)<br />

p = (4, 5)<br /> x, y = p # x = 4, y = 5 </p> <p>data = [‘ACME’, 50, 90.1, (2012, 12, 21)]<br /> name, shares, price, date = data # name = ACME, shares = 50, price = 90.1, date = (2012, 12, 21)</p> <p>say = “Big”<br /> a, b, c = say # a = B, b = i, c = g

# List Unpacking using *args<br /> def count_sevens(*args):<br /> return args.count(7)</p> <p>nums = [90,1,35,67,89,20,3,1,2,3,4,5,6,9,34,46,57,<br /> 68,79,12,23,34,55,1,90,54,34,76,8,23,34,45,<br /> 56,67,78,12,23,34,45,56,67,768,23,4,5,6,7,<br /> 8,9,12,34,14,15,16,17,11,7,11,8,4,6,2,5,8,7,10,12,<br /> 13,14,15,7,8,7,7,345,23,34,45,56,67,1,7,3,<br /> 6,7,2,3,4,5,6,7,8,9,8,7,6,5,4,2,1,2,3,4,5,6,<br /> 7,8,9,0,9,8,7,8,7,6,5,4,3,2,1,7]</p> <p>print(count_sevens(*[1,4,7]) # 1<br /> print(count_sevens(*nums)) # 14 </p> <p># Dictionary Unpacking using **kwargs<br /> def add_and_multiply_numbers(a,b,c):<br /> print(a + b * c)</p> <p>data = dict(a=1, b=2, c=3)</p> <p>add_and_multiply_numbers(**data) # 7