My text file consists of a sequence of arrays all on the same line (i.e. no indentations). I'm trying to take these arrays and put them into a python list.
The text file is like this:
[1,2,3,4],[1,2,3,5],[1,2,3,6],[1,2,3,7],[1,2,3,8],[1,2,3,9],[1,2,3,10]........
I'm trying to take this and make a list of lists such as:
[[1,2,3,4],[1,2,3,5],[1,2,3,6],[1,2,3,7],[1,2,3,8],[1,2,3,9],[1,2,3,10]]
I tried using the read method but all I get is one giant string.
First, read() in your file and save it to a variable (equivalent to this):
a = '[1,2,3,4],[1,2,3,5],[1,2,3,6],[1,2,3,7],[1,2,3,8],[1,2,3,9],[1,2,3,10]'
If you don't want to use eval(), you can use the safer ast.literal_eval():
import ast
list(ast.literal_eval(a))
If you don't want to use any kind of evaluation, you can use built-ins and string methods:
[list(map(int, line.split(','))) for line in a.strip('[]').split('],[')]
These will all produce the following:
[[1, 2, 3, 4], [1, 2, 3, 5], [1, 2, 3, 6], [1, 2, 3, 7], [1, 2, 3, 8], [1, 2, 3, 9], [1, 2, 3, 10]]
