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What is the meaning of string index out of range?

asked 2016-12-04 06:45:49 -0600

Nilesh gravatar image

updated 2017-01-08 05:06:04 -0600

FrédéricC gravatar image

I am dealing with [35,6] linear code over finite filed with 2 elements. I am able to get an output of its generator matrix as 6x35 matrix, but while computing parity check matrix which will be of size 29x35, I am getting following output: IndexError:string index out of range

Does it mean that its size is two large? If still it is so, how to get that matrix in sage??

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Could you please provide the full code that lead to the error ?

tmonteil gravatar imagetmonteil ( 2016-12-04 07:00:58 -0600 )edit

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answered 2016-12-04 07:15:38 -0600

tmonteil gravatar image

ithout further information on your concrete use case, such an error appears when you asks for the letter of a string at an index that is larger than the length of the string:

sage: s = 'abc'
sage: s[0]
'a'
sage: s[1]
'b'
sage: s[2]
'c'
sage: s[3]
IndexError: string index out of range
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Asked: 2016-12-04 06:45:49 -0600

Seen: 34 times

Last updated: Dec 04 '16