Flatten a lists of list with some lists have multiple values – python

Question

I was going through this post, which has some great answers, but it does not work for my situation.

I have a list like this:

my_list = [['Hi'],['Hello'],['How', 'are'], ['you']]

I did the flattening and I am getting this,

my_flat_list = [i[0] for i in my_list]
my_flat_list
>>['Hi', 'Hello', 'How', 'you']

If I don’t use i[0] I get in list format again.

The output I need is:

['Hi', 'Hello', 'How are', 'you']

I also tired this post using itertools still not getting my desired results.

How can I get my output?

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Answer 1

You need to join the inner lists:

list(map(" ".join, my_list))
#['Hi', 'Hello', 'How are', 'you']

Answered By: DYZ

Answer 2

str.join will help you turn every sublist to a single string:

In [1]: [' '.join(sublist) for sublist in my_list]
Out[1]: ['Hi', 'Hello', 'How are', 'you']

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