Python | Convert list of tuples into list
Given a list of tuples, write a Python program to convert it into list.
Examples:
Input: [(11, 20), (13, 40), (55, 16)]
Output:[11, 20, 13, 40, 55, 16]
Input: [('Geeks', 2), ('For', 4), ('geek', '6')]
Output: ['Geeks', 2, 'For', 4, 'geek', '6']
Below are methods to convert list of tuples into list.
Method #1 : Using list comprehension
# Python code to convert list of tuples into list # List of tuple initialization lt = [('Geeks', 2), ('For', 4), ('geek', '6')] # using list comprehension out = [item for t in lt for item in t] # printing output print(out) |
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Output:
['Geeks', 2, 'For', 4, 'geek', '6']
Method #2 : Using itertools
# Python code to convert list of tuple into list # Importing import itertools # List of tuple initialization tuple = [(1, 2), (3, 4), (5, 6)] # Using itertools out = list(itertools.chain(*tuple)) # printing output print(out) |
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Output:
[1, 2, 3, 4, 5, 6]
Method #3 : Using iteration
# Python code to convert list of tuple into list # List of tuple initialization tup = [(1, 2), (3, 4), (5, 6)] # result list initialization result = [] for t in tup: for x in t: result.append(x) # printing output print(result) |
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Output:
[1, 2, 3, 4, 5, 6]
Method #4 : Using sum
# Python code to convert list of tuple into list # List of tuple initialization tup = [(1, 2), (3, 4), (5, 6)] # using sum function() out = list(sum(tup, ())) # printing output print(out) |
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Output:
[1, 2, 3, 4, 5, 6]
Method #5 : Using operator and reduce
# Python code to convert list of tuple into list import operator from functools import reduce # List of tuple initialization tup = [(1, 2), (3, 4), (5, 6)] # printing output print(list(reduce(operator.concat, tup))) |
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Output:
[1, 2, 3, 4, 5, 6]
Method #6 : Using lambda
# Python code to convert list of tuple into list # List of tuple initialization tup = [(1, 2), (3, 4), (5, 6)] # Using map for 0 index b = map(lambda x: x[0], tup) # Using map for 1 index c = map(lambda x: x[1], tup) # converting to list b = list(b) c = list(c) # Combining output out = b + c # printing output print(out) |
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Output:
[1, 3, 5, 2, 4, 6]
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