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Join Date: Jan 2007
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Junior Poster in Training
test = [random.randint(1,10) for i in range(20)]
Can someone what does the random.randint(1,10) fron to for loop does, and the square brackets around it means, make it a list?
Can someone what does the random.randint(1,10) fron to for loop does, and the square brackets around it means, make it a list?
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Join Date: Jun 2007
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Light Poster
test = [random.randint(1,10) for i in range(20)]
equals
>>> import random
>>> test=[]
>>> for i in range(20):
#test.append(random.randint(1, 10))
random_int=random.randint(1, 10)
test.append(random_int) Last edited by StrikerX11 : Sep 13th, 2007 at 12:28 am.
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Join Date: Aug 2007
Location: Johannesburg, South Africa
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Newbie Poster
It should give you a list of 20 random numbers between 1 and 10
e.g. [3,6,7,1,9.......]
It's not really written the "python way" which encourages transparent readable code!
hth
:-D
e.g. [3,6,7,1,9.......]
It's not really written the "python way" which encourages transparent readable code!
hth
:-D
--
post mortem nulla voluptas
post mortem nulla voluptas
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Join Date: Jul 2006
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Posting Pro
The square brackets are part of a construction called a 'list comprehension'. The basic syntax is
[x for blah in yourlist]
The idea is to create a list quickly in one line. And as StrikerX11 noted, it's exactly the same as
(Usually, x and blah have some relationship to each other, but as you can see in this case, not always).
I wonder what the clearest way to write that would be. I found myself saying, "That's how I'd do it..."
Jeff
[x for blah in yourlist]
The idea is to create a list quickly in one line. And as StrikerX11 noted, it's exactly the same as
Python Syntax (Toggle Plain Text)
(Usually, x and blah have some relationship to each other, but as you can see in this case, not always).
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Originally Posted by grobister
It's not really written the "python way" which encourages transparent readable code!
I wonder what the clearest way to write that would be. I found myself saying, "That's how I'd do it..."
Jeff
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