Q:

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

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?

A:

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']

