Change language

Python | Removing a duplicate substring from a list

|

Method # 1: Using set () + split ()
This particular problem can be solved by using the split function to have a target string, and then set which will actually remove the duplication from the line.

# Python3 demo code
# removing duplicate substrings
# using set () + split ()

 
# initializing list

test_list = [ ’aa-aa-bb’ , ’bb-cc’ , ’ gg-ff-gg’ , ’hh-hh’ ]

 
# print original list

print ( "The original list:" + str (test_list))

 
# using set () + split ()
# remove duplicate substrings

res = [ set (sub.split ( ’-’ )) for sub in test_list]

 
# print result and

print ( "The list after duplicate removal: " + str (res))

Output:

 The original list: [’aa -aa-bb’, ’bb-cc’,’ gg-ff-gg’, ’hh-hh’] The list after duplicate removal: [{’ aa’, ’bb’}, {’ cc’, ’bb ’}, {’ gg’, ’ff’}, {’ hh’}] 

Method # 2: Using {} + split () + list comprehension
For cases where we need to completely split strings as a separate component, we can use this set of methods to accomplish this task. The curly braces transform for setting and resting all functionality similar to the method above.

# Python3 demo code
# removing duplicate substrings
# using {} + split () + list comprehension

  
# initializing list

test_list = [ ’aa-aa-bb’ , ’bb-cc’ , ’ gg-ff-gg’ , ’hh-hh’ ]

 
# print the original cn claim

print ( "The original list : " + str (test_list))

 
# using {} + split () + list comprehension
# remove duplicate substrings

res = list ({i for sub in test_list for i in sub.split ( ’-’ )})

 
# print result

< p> print ( "The list after duplicate removal:" + str (res))

Output:

 The original list: [’aa-aa-bb’,’ bb-cc ’,’ gg-ff-gg’, ’hh-hh’] The list after duplicate removal: [’ cc’, ’ff’,’ aa’, ’hh’,’ gg’, ’bb’] 

Shop

Learn programming in R: courses

$

Best Python online courses for 2022

$

Best laptop for Fortnite

$

Best laptop for Excel

$

Best laptop for Solidworks

$

Best laptop for Roblox

$

Best computer for crypto mining

$

Best laptop for Sims 4

$

Latest questions

NUMPYNUMPY

Common xlabel/ylabel for matplotlib subplots

12 answers

NUMPYNUMPY

How to specify multiple return types using type-hints

12 answers

NUMPYNUMPY

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

12 answers

NUMPYNUMPY

Flake8: Ignore specific warning for entire file

12 answers

NUMPYNUMPY

glob exclude pattern

12 answers

NUMPYNUMPY

How to avoid HTTP error 429 (Too Many Requests) python

12 answers

NUMPYNUMPY

Python CSV error: line contains NULL byte

12 answers

NUMPYNUMPY

csv.Error: iterator should return strings, not bytes

12 answers

News


Wiki

Python | How to copy data from one Excel sheet to another

Common xlabel/ylabel for matplotlib subplots

Check if one list is a subset of another in Python

sin

How to specify multiple return types using type-hints

exp

Printing words vertically in Python

exp

Python Extract words from a given string

Cyclic redundancy check in Python

Finding mean, median, mode in Python without libraries

cos

Python add suffix / add prefix to strings in a list

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

Python - Move item to the end of the list

Python - Print list vertically