CODEWITHSUNDEEP
pythonlist
Võ Hoàng Trọng
Võ Hoàng Trọng

Reputation: 69

IndexError: list index out of range 2 dimension list

I get this error:

Traceback (most recent call last): File "C:/Python27/main.py", line 21, in matrix[1][1].append(2) IndexError: list index out of range

This is my code

file = open("C:\\Python27\\test.txt", "r")

s1 = file.read();
s2 = file.read();

matrix = [[0 for x in range(len(s1))] for x in range(len(s2))]

matrix[1][1].append(2)
print matrix[1][1]

len(s1) and len(s2) is larger than 5

I try using matrix[1][1] = 2 instead of matrix[1][1].append(2)but it won't work.

So what's my mistakes?

Upvotes: 0

Views: 640

Answers (1)

nachodev
nachodev

Reputation: 96

I'd print len(s1) and len(s2). They are probably not what you expect. And if you want to set row 1 col 1 of matrix you would do:

matrix[1][1] = 2

because otherwise you are trying to append number 2 to element at (1,1) which is not a list.

Upvotes: 3

Related Questions