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How do I merge multiple sub-arrays (lists) into one set of unique elements in Python?

How do I merge multiple sub-arrays (lists) into one set of unique elements in Python?

1 Answer

Best Answer

language: Py

Converting a sub-array within the array to set can be used as below.

a = [['1','2','3'],['1','2','5'],['1','4','3']]

print( set().union(*a) )

result: {'5', '3', '4', '1', '2'}