CODEWITHSUNDEEP
python-2.7
Sam c21
Sam c21

Reputation: 253

How to turn a list of tuples into a list of strings

I have a list of tuples generated by this code.

ast = [3,1]
fgh = list(itertools.product(ast, repeat=3))

And I was wanting to turn it into a list of strings like this

['3, 3, 3', '3, 3, 1', '3, 1, 3', '3, 1, 1', '1, 3, 3', '1, 3, 1', '1, 1, 3', '1, 1, 1']

I have tried everything I could find, but I'm sure I'm missing something.

Keep getting this. TypeError: sequence item 0: expected string, int found. when i try to use .join().

this code is the closest I've gotten lol.

[('{} '*len(t)).format(*t).strip() for t in fgh]

and I get this

['3 3 3', '3 3 1', '3 1 3', '3 1 1', '1 3 3', '1 3 1', '1 1 3', '1 1 1']

Thanks, I really appreciate it.

Upvotes: 0

Views: 48

Answers (1)

alecxe
alecxe

Reputation: 473833

You can use str.join() instead using , as a delimiter and also converting individual items to string (this is what the map(str, item) is responsible for) for the str.join() to work:

>>> import itertools
>>> ast = [3,1]
>>> fgh = itertools.product(ast, repeat=3)
>>> [", ".join(map(str, item)) for item in fgh]
['3, 3, 3', '3, 3, 1', '3, 1, 3', '3, 1, 1', '1, 3, 3', '1, 3, 1', '1, 1, 3', '1, 1, 1']

Upvotes: 2

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