python - TypeError: 'int object has no attribute '__getitem__' ... but where? -

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for markov chain project writing, generating error @ top of page. know means trying call list method on integer object, must means either a) not initializing list correctly or b) overwriting list integer value @ point in program. however, have been trying debug hours , cannot find issue in small program. error trace follows:

traceback (most recent call last):   file "/users/adamlind/pycharmprojects/capstone/song.py", line 9, in <module>     musicmarkov.add(["c", 4]) #row   file "/users/adamlind/pycharmprojects/capstone/music.py", line 19, in add     self._markov.add(inote[0], fnote[0])   file "/users/adamlind/pycharmprojects/capstone/markov.py", line 22, in add     self._adjmatrix[val[ival]][val[fval]] += 1 typeerror: 'int' object has no attribute '__getitem__'

and here link github repo containing project (this first stackoverflow question, not sure if frowned upon or not): https://github.com/adamlind323/csc493

i checked through few times couldn't figure out overwriting. i'm not experienced python, , appreciated.

thanks!

val int. attempt index (val[ival]) leads exception.

on line #21 intialize val in following way:

val = self._lookupval[ival]

_lookupval dictionary defined on line #11 contains integers (see line #14)


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