Python list comprehension to join list of lists [duplicate]

Given lists = [['hello'], ['world', 'foo', 'bar']]

How do I transform that into a single list of strings?

combinedLists = ['hello', 'world', 'foo', 'bar']

How do you merge two lists without duplicates in Python?

Python merges two lists without duplicates could be accomplished by using a set. And use the + operator to merge it.

How do you combine lists within a list Python?

Concatenate Two Lists in Python In almost all simple situations, using list1 + list2 is the way you want to concatenate lists.

lists = [['hello'], ['world', 'foo', 'bar']] combined = [item for sublist in lists for item in sublist]

Or:

import itertools  lists = [['hello'], ['world', 'foo', 'bar']] combined = list(itertools.chain.from_iterable(lists))

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