map in python

1map(function_to_apply, list_of_inputs)

1# Python program to demonstrate working 
2# of map. 
3  
4# Return double of n 
5def addition(n): 
6    return n + n 
7  
8# We double all numbers using map() 
9numbers = (1, 2, 3, 4) 
10result = map(addition, numbers) 
11print(list(result))
12# result [2, 4, 6, 8]

1items = [1, 2, 3, 4, 5]
2squared = list(map(lambda x: x**2, items))
3

1from functools import reduce
2product = reduce((lambda x, y: x * y), [1, 2, 3, 4])
3
4# Output: 24
5

1product = 1
2list = [1, 2, 3, 4]
3for num in list:
4    product = product * num
5
6# product = 24
7

1items = [1, 2, 3, 4, 5]
2squared = []
3for i in items:
4    squared.append(i**2)
5

1>>> numbers = [1, 2, 3, 4, 5]
2>>> squared = []
3
4>>> for num in numbers:
5...     squared.append(num ** 2)
6...
7
8>>> squared
9[1, 4, 9, 16, 25]
10