creating a list of tuples from a list in Python

Question

I have my first question here. I'm writing a code in Python. I have following list

X = [0.2,0.3,0.2,0.3,0.2,0.3,0.2,0.3,0.2,0.3]

I would like to create a new list made by tuples of two or a different number of elements of the first list as follows.

newList = [(0.2,0.3),(0.2,0.3),(0.2,0.3),(0.2,0.3),(0.2,0.3)]

I'm looking for a function of the lists or tuples. or maybe something easy, without the use of a big "For"

fyi, the easiest solution without `map`, `lambda`, or even `tuple` is to just use `[(X[i], X[i + 1]) for i in range(0, len(X), 2)]` — Arne, May 29 '18 at 10:57

akash karothiya · Accepted Answer · 2018-05-29T10:52:34.987

2

Use map and lambda:

>>> n = 2
>>> list(map(lambda i: tuple(X[i: i+n]), range(0, len(X), n)))
>>> [(0.2, 0.3), (0.2, 0.3), (0.2, 0.3), (0.2, 0.3), (0.2, 0.3)]

edited May 29 '18 at 10:52

answered May 29 '18 at 10:46

akash karothiya

this is Python 2.x code. For Python 3 you have to cast your `map` to `list` – Ma0 May 29 '18 at 10:52
@Ev.Kounis I have edited the answer thanks for pointing out :) – akash karothiya May 29 '18 at 10:52

1 Answers1