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python dictionary map function

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UnAngeloCheSiChiamaTheKing answered on May 11, 2020 Popularity 10/10 Helpfulness 2/10

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python dictionary map function

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dictionary = {k: f(v) for k, v in dictionary.items()}

Popularity 10/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: dictionary map-function python

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Contributed on Nov 04 2020

UnAngeloCheSiChiamaTheKing

0 Answers Avg Quality 2/10

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map example in python

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# 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))

# Output :-

# 1 + 1 = 2 / 2 + 2 = 4 / 3 + 3 = 6 / 4 + 4 = 8

[2, 4, 6, 8]

# Example With Strings :-


# List of strings
my_list = ['sat', 'bat', 'cat', 'mat']
   
# map() can listify the list of strings individually
test = list(map(list, my_list))
print(test)

# Output :-

# listify the list of strings individually Like :-

# 'sat' 3 Letters ==> The Function is Offered Individually :- 's', 'a', 't'

[['s', 'a', 't'], ['b', 'a', 't'], ['c', 'a', 't'], ['m', 'a', 't']]

Popularity 10/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: map

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Contributed on Aug 12 2022

Lucifer

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python map function

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# The map function applies a function to every item in a list,
# and returns a new list.

numbers =  [0, -1, 2, 3, -4]

def square_func(n):
    return n*n
 
new_numbers = list(map(square_func, numbers))
#new_numbers: [0, 1, 4, 9, 16]

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Source: Grepper

Tags: map-function map-functi

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Contributed on Jan 30 2022

Dark Dotterel

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map function in python

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# 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))

Popularity 10/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: map-function map-functi

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Contributed on May 11 2020

Bright Butterfly

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dict map()

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List = [H4, C9, S4, D2]
Dictionary  = {key: int(value) for key, value in List}

# Output:
# {'H': 4, 'C': 9, 'S': 4, 'D': 2}

Popularity 9/10 Helpfulness 3/10 Language python

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Contributed on Aug 17 2021

Old-fashioned Ostrich

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pyhton map

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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)

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Source: www.programiz.com

Tags: map

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Contributed on Jul 12 2020

Bugs Bunny

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Python Map function

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# 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]

Popularity 10/10 Helpfulness 2/10 Language python

Source: thetechbrainer.com

Tags: map-function map-functi

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Contributed on May 04 2021

BodeN'Cug

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How to use map in Python?

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#Methodmap will make your code more readable
#We multiply all the values in the list by two
numbers=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
print(list(map(lambda num: num*2, numbers)))

#If you run the code, you will see that you were able to do this without using a loop
#GOOD LUCK

Popularity 9/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: map python

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Contributed on Jun 09 2023

Mohammad Sadati

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map in python

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#Syntax
map(functions, iterables)

Popularity 10/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: map

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Contributed on Jul 17 2020

san_bt

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map in python

Comment

# 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]

Popularity 10/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: map

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Contributed on Jun 05 2020

Grumpy Gull

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map python

Comment

#### Core python use case #####
#map(func_name, some_list)

items = [1, 2, 3, 4]
list(map(lambda x: x + 2 , items))  ## [3, 4, 5, 6]
#### Dataframe Application #####
# Method 1
df["col"].apply(lambda x: x+1)
# Method 2
genders = {'James': 'Male', 'Jane': 'Female'}
df['gender'] = df['name'].map(genders)

Popularity 9/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: map

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Contributed on Feb 01 2023

Innocent Iguana

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python dictionary map function

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