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Creating multiple generators inside a list comprehension

I am trying to group cards of the same suit (color) and rank inside generators and store these generators inside the list comprehension.

The solution I came up with does this, except for the fact that all the generators contain exactly the same cards. Any idea why?

Here is the code

deck=range(52)

gens=[(i for i in deck if i%13==v) for v in range(13)]

Based on this, I would expect, for example:

gens[1].next()
1
gens[1].next()
14


gens[10].next()
10
gens[10].next()
23

But instead I get

gens[1].next()
12

gens[1].next()
25

gens[1].next()
38

And all the generators in the list return the same results.

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2 answers

, v v . , ( next), v 12, , v .

:

deck = range(52)

def select_kth(v):
    return (i for i in deck if i % 13 == v)

gens = [select_kth(v) for v in range(13)]

, v .

, :

 gens = [(lambda v: (i for i in deck if i % 13 == v))(v) for v in range(13)]
+7

, :

gens = []
for v in range(13):
    def gen():
        for i in deck:
            if i%13 == v:
                yield i
    gens.append(gen())

13 , v, 12.

, , : v . - :

gens = [(lambda x: (i for i in deck if i%13==x)(v) for v in range(13)]
+5

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