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Following on my previous question How to group list items into tuple?
If I have a list of tuples, for example
a = [(1,3),(5,4)] How can I unpack the tuples and reformat it into one single list
b = [1,3,5,4] I think this also has to do with the iter function, but I really don't know how to do this. Please enlighten me.
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📢 TLDR: Use + In almost all simple situations, using list1 + list2 is the way you want to concatenate lists. The edge cases below are better in some situations, but + is generally the best choice. All options covered work in Python 2.3, Python 2.7, and all versions of Python 31.
Tuple is a collection which is ordered and unchangeable. Allows duplicate members.
b = [i for sub in a for i in sub] That will do the trick.
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In [11]: list(itertools.chain(*a)) Out[11]: [1, 3, 5, 4] If you just need to iterate over 1, 3, 5, 4, you can get rid of the list() call.
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