Python - 6 Ways to Flatten a List of Lists (Nested Lists) TUTORIAL

Python tutorial on 6 ways to flatten a list of lists. Learn 6 ways to make a flat list from nested lists.

We flatten lists with list comprehensions, reduce, and chaining, among other solutions. Convert nested lists to flat lists!

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[dimitriosdesmos]

very good stuff, i just founf your channel and i was impressed with your explanations

[chandlerfrink]

I have a problem with a list of lists of tuples and I am attempting to flatten those into 1 list. I've been using list comprehensions and it gets me half way there but I still can't seem to 'break' the tuple. Any advice?

[pphodaie]

how about using map
list(map(lambda x: x if isinstance(x, int) else list(x), a))

[malteplath]

This sounds like a challenge to find at least two more methods...
Theoretically, the sum and the reduce versions are doing the same thing: adding the list together. Of course the implementation of CPython does not treat them the same.

[jk]

Everything is ok but Zain Bahrain Network sucks. It always sucks after package renewal.

[manfrombritain]

this is the one bit of syntax that my brain simply refuses. item for items in newlist for item in items... doesn't matter how many times i read it, i don't like it. i understand it but cannot grock it