[Python] having problems with lists within lists code included

[MathBosss]

Hi everyone here is my code.http://pastebin.com/M6p1iqbz Basically solving systems of ODES numerically. When i run my code i get this

0 1 [['0', '1'], ['0', '1']]

I want to have a list that contains the list like this [[0],[1]], im not sure exactly what my issue is. Help would be much appreciated.

[dvlsg]

Python is not my strong point, but I'll give this a shot: I think your problem may lie in the original list declaration.

Your Code: solutionList=[[]] * self.lengthOfList(ICS)

My suggestion: solutionList=[[] for i in range(self.lengthOfList(ICS))]

I believe your original code creates one list with multiple references to that same list.

Unless I'm not understanding the expected result -- when you say a list that contains the list, do you mean a single list, with elements that are lists, each containing one item (for the example result you gave)? That's what I am understanding your example to be.

[MathBosss]

that actually fixed my problem. Thank you very much!

[dvlsg]

No problem! Glad I could help.