Split list into different variables

Question

I have a list like this:

[('love', 'yes', 'no'), ('valentine', 'no', 'yes'), ('day', 'yes','yes')]

How do I split this list into three variables where each variable holds one tuple, i.e.

var1 = ('love', 'yes', 'no')
var2 = ('valentine', 'no', 'yes')
var3 = ('day', 'yes','yes')

score 46 · Accepted Answer · answered Feb 14 '14 at 23:49

46

Assign to three names:

var1, var2, var3 = listobj

Demo:

>>> listobj = [('love', 'yes', 'no'), ('valentine', 'no', 'yes'), ('day', 'yes','yes')]
>>> var1, var2, var3 = listobj
>>> var1
('love', 'yes', 'no')
>>> var2
('valentine', 'no', 'yes')
>>> var3
('day', 'yes', 'yes')

answered Feb 14 '14 at 23:49

Martijn Pieters

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How would split each list, var1/var2/var3, into a separate words? The `split()` method does not seem to work on list objects. – Eagle Feb 14 '14 at 23:58
Got it! `[i.split()[0] for i in var1]` – Eagle Feb 15 '14 at 00:02
How to do this for an argument list? E.g. `def myfunc(a,b,c,d):` – WestCoastProjects Nov 14 '17 at 01:44
3

@javadba: what do you mean? You want to pass in a list as 4 separate arguments? Then use the `*` call syntax: `myfunc(*listobj_with_4_values)`. – Martijn Pieters Nov 14 '17 at 11:13
Yes that is what I were looking for (the equivalent of scala's `:_*` . thx! – WestCoastProjects Nov 14 '17 at 12:33
How do I split it if I don't know how many variables there are? – Ver Nick Sep 29 '21 at 09:59

score 1 · Answer 2 · answered Apr 05 '23 at 16:50

You can also use * to unpack into different variables. It's useful if you don't know how many variables to list split into or if only a few variables are needed out of a list.

lst = [('love', 'yes', 'no'), ('valentine', 'no', 'yes'), ('day', 'yes','yes')]

first, *rest = lst
first  # ('love', 'yes', 'no')
rest   # [('valentine', 'no', 'yes'), ('day', 'yes', 'yes')]

# unpack the last variable
*rest, last = lst

# unpack the first two
first, second, *rest = lst

# unpack the first three
first, second, third, *rest = lst

Split list into different variables

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