Help with nested list 
July 2nd, 2009, 12:34 PM
| | Newbie | | Join Date: Jul 2009
Posts: 3
| |
Hi,
I need help creating nested lists
my code follows - test = ["a","b","c"]
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testtwo = ["e","f","g"]
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mo = []
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for i in range (0,len(test)):
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for j in range(0,len(testweb)):
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moa = test[i]+testweb[j]
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mo.append[moa]
I want final output like this
mo[ae[],af[],ag[],be[], ....... cg[]] instead of mo[ae,af,ag,be, ....... cg]
How to get this??? I've searched in this forum and couldn't find an answer.
Thanks,
Rajasankar
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July 2nd, 2009, 03:35 PM
|  | Moderator | | Join Date: Oct 2006 Location: Nashville, TN
Posts: 1,545
| | | re: Help with nested list
Your desired output is invalid. The brackets '[]' represent a slice object. What you are wanting is similar to: - >>> s = slice(10,20)
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>>> s.indices(15)
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(10, 15, 1)
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>>> s.indices()
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Traceback (most recent call last):
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File "<interactive input>", line 1, in ?
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TypeError: indices() takes exactly one argument (0 given)
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>>>
You may want a dictionary with empty lists as values. - >>> test = ["a","b","c"]
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>>> testtwo = ["e","f","g"]
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>>> mo = {}
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>>> for i in test:
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... for j in testtwo:
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... mo.setdefault(i+j, [])
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...
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[]
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[]
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[]
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[]
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[]
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[]
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[]
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[]
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[]
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>>> mo
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{'be': [], 'bf': [], 'bg': [], 'ae': [], 'ag': [], 'af': [], 'cg': [], 'cf': [], 'ce': []}
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>>>
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July 3rd, 2009, 03:29 AM
| | Newbie | | Join Date: Jul 2009
Posts: 3
| | | re: Help with nested list
Hi,
Thanks for this info. I used the dict in Python and it worked.
Thanks again.
Rajasankar
|
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