map function in python
# Python program to demonstrate working
# of map.
# Return double of n
def addition(n):
return n + n
# We double all numbers using map()
numbers = (1, 2, 3, 4)
result = map(addition, numbers)
print(list(result))
4
2
def calculateSquare(n):
return n*n
numbers = (1, 2, 3, 4)
result = map(calculateSquare, numbers)
print(result)
# converting map object to set
numbersSquare = list(result)
print(numbersSquare)
Thank you!
2
4
(2 Votes)
0
3.67
9
# for the map function we give a function (action to act), a data action to act on that data.
# without map
def multiply_by2(li):
new_list = []
for number in li:
new_list.append(number*2)
return new_list
print(multiply_by2([1, 2, 3]))
# using map function
def multiply_by_2(item):
return item*2
print(list(map(multiply_by_2, [1, 2, 3])))
# function that returns usernames in all uppercase letters.
usernames = ["RN_Tejas", "RN_Tejasprogrammer", "Rajendra Naik", "yooo", "Brainnnni", "Ouuuuut"]
def no_lower(item):
return item.upper()
print(list(map(no_lower, usernames)))
# squares function
list_squares = list(range(1, 101))
print(list_squares)
def square(number):
return number**2
square_list = list(map(square, list_squares))
def square_root(number):
return number // number
print(list(map(square_root, square_list)))
def no_upper(string):
return string.lower()
print(list(map(no_upper, 'TEJAS')))
Thank you!
9
3.67
(9 Votes)
0
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