Can I get a List of functions using filter in Python? [duplicate]

Question

I have a list which has the divisors of 10 like this:

print filter(lambda x: 10 % x == 0, range(1, 10))
>>>[1, 2, 5]

Then I need a List of function like that :

F =  [lambda x:k+x for k in filter(lambda x: 10 % x == 0, range(1, 10))]

When I call every functions in the List, it turns out to be wrong:

for f in F:
   print(f(0))
>>> 5
>>> 5
>>> 5

so How can I get the right list of function?

sloth · Accepted Answer · 2013-08-01 09:26:16Z

1

the lambda function captures the variable k. To get around it, you can copy it to a variable local to the lamba function:

F =  [lambda x, k=k:k+x for k in filter(lambda x: 10 % x == 0, range(1, 10))]

answered Aug 1, 2013 at 9:26

sloth

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