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Python List copy()

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almog hakak answered on March 5, 2020 Popularity 9/10 Helpfulness 2/10

answer Python List copy()

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Python List copy()

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-1

# mixed list
prime_numbers = [2, 3, 5]

# copying a list
numbers = prime_numbers.copy()


print('Copied List:', numbers)

# Output: Copied List: [2, 3, 5]

Popularity 9/10 Helpfulness 2/10 Language python

Source: www.programiz.com

Tags: list python

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Contributed on Aug 31 2022

almog hakak

0 Answers Avg Quality 2/10

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copy a list python

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new_list = old_list.copy()
# or
new_list = old_list[:]

Popularity 10/10 Helpfulness 5/10 Language python

Source: stackoverflow.com

Tags: copy

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Contributed on Mar 05 2020

Ashamed Armadillo

0 Answers Avg Quality 2/10

python copy list

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# Performance analysis by River on Stack Overflow
METHOD                  TIME TAKEN
b = [*a]                2.75180600000021
b = a * 1               3.50215399999990
b = a[:]                3.78278899999986  # Python2 winner
b = a.copy()            4.20556500000020
b = []; b.extend(a)     4.68069800000012
b = a[0:len(a)]         6.84498999999959
*b, = a                 7.54031799999984
b = list(a)             7.75815899999997
b = [i for i in a]      18.4886440000000
b = copy.copy(a)        18.8254879999999  # With `import copy`
b = []
for item in a:
    b.append(item)      35.4729199999997
  
# NOTE: Only for shallow copies, use copy.deepcopy for nested lists

Popularity 10/10 Helpfulness 5/10 Language python

Source: stackoverflow.com

Tags: copy

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Contributed on Nov 21 2020

anderium

0 Answers Avg Quality 2/10

copy list python

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some_list = [1,2,3]
copied_list1 = some_list[:]
copied_list2 = list(some_list)
copied_list3= [*some_list]
# Never do this:
y = x # as it is copying reference to list object in memory instead of the items in the list

Popularity 8/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: copy list

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Contributed on Oct 26 2023

Innocent Iguana

0 Answers Avg Quality 2/10

how to copy the list in python

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Example of list below:
chocolate_cake = ["eggs","flour","milk","baking soda", "choco powder"]
------------------------------------------------------------------------
To simpily copy this list you can do the command below:
chocolate_cake2 = chocolate_cake.copy()

Popularity 9/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: copy

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Contributed on Jul 02 2022

Abstract

0 Answers Avg Quality 2/10

python copy list

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a = [1, 2, 3]
b = [*a] # deep copy the list

Popularity 9/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: copy

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Contributed on Apr 24 2022

Agreeable Armadillo

0 Answers Avg Quality 2/10

Python list copy

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a_copy = a_list.copy()

Popularity 9/10 Helpfulness 2/10 Language python

Source: stackoverflow.com

Tags: copy

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Contributed on Apr 21 2022

Hunin and Munin

0 Answers Avg Quality 2/10

python list copy

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# Copy a List
basket = ['apples', 'pears', 'oranges']
new_basket = basket.copy()
new_basket2 = basket[:]

Popularity 10/10 Helpfulness 2/10 Language python

Source: zerotomastery.io

Tags: copy

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Contributed on Nov 21 2021

Tejas Naik

0 Answers Avg Quality 2/10

python copy list

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a=[1,2,3,4]
b=a[:] 
''' now b has all elements of  a'''

Popularity 10/10 Helpfulness 1/10 Language python

Source: Grepper

Tags: copy

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Contributed on Sep 29 2020

Ranger

0 Answers Avg Quality 2/10

copy a list python

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original_list = [1, 2, 3, 4, 5]
copied_list = original_list[:]
print(copied_list)

Popularity 7/10 Helpfulness 1/10 Language python

Source: Grepper

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Contributed on Sep 11 2023

YOU.com

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Python List copy()

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