Map in python 3

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))

Map 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))# result [2, 4, 6, 8]

Python Map function

# Let's define general python function
>>> def doubleOrNothing(num):
...     return num * 2

# now use Map on it.
>>> map(doubleOrNothing, [1,2,3,4,5])
<map object at 0x7ff5b2bc7d00>

# apply built-in list method on Map Object
>>> list(map(doubleOrNothing, [1,2,3,4,5])
[2, 4, 6, 8, 10]

# using lambda function
>>> list(map(lambda x: x*2, [1,2,3,4,5]))
[2, 4, 6, 8, 10]

Source: thetechbrainer.com

Map in python

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

Source: book.pythontips.com

Map in python

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

Source: book.pythontips.com

Map in python 3

from multiprocessing import Pool

def test( v ):
    print(v)
    return v

if __name__ == '__main__':
    with Pool(2) as p:
        print(p.map(test, range(5)))

Similar codes

0 vote170 views1 answer
Python function pointer with multiple args
Python
1 vote183 views1 answer
How to redirect to previous page in django
Python Django
0 vote185 views1 answer
Mac big sur and python3 problems
Python
25 votes177 views6 answers
Python check if list contains elements of another list
Python
7 votes166 views1 answer
Python sqrt import
Python
4 votes160 views1 answer
Find ip address on local network ubuntu
Python
0 vote160 views1 answer
Pandas plot column titles vertical
Python
5 votes169 views2 answers
Write in entry() in tkinter
Python
1 vote174 views1 answer
Pygame how to change a pictures hue
Python
0 vote183 views1 answer
Only get top 10 python dataframe
Python