How to remove apostrophes in a matrix

[sylas]

Hi all! I am very near to have a real matrix. Only some apostrophes to remove.

import csv
from pprint import pprint
def matrix():
    pass

with open('numbers.csv', newline='') as csvfile:
    puzzle=csv.reader(csvfile, delimiter=' ', quotechar='|')
    print(puzzle)

    for row in puzzle:#origin
        print(', '.join(row))#originr
        print(row)
matrix=row
print(matrix)

The output is:

Output:
λ python setup.py
<_csv.reader object at 0x000001E0CDD1AE80>
[0, 0, 9, 0, 0, 0, 5, 6, 2], [0, 0, 0, 9, 0, 0, 0, 0, 0], [2, 0, 0, 0, 0, 3, 1, 7, 0], [0, 0, 0, 1, 9, 0, 7, 8, 0], [0, 7, 5, 0, 0, 0, 0, 0, 0], [0, 0, 0, 2, 5, 0, 6, 3, 0], [4, 0, 0, 0, 0, 8, 2, 9, 0], [0, 0, 0, 7, 0, 0, 0, 0, 0], [0, 0, 8, 0, 0, 0, 3, 5, 7]
['[0, 0, 9, 0, 0, 0, 5, 6, 2]', '[0, 0, 0, 9, 0, 0, 0, 0, 0]', '[2, 0, 0, 0, 0, 3, 1, 7, 0]', '[0, 0, 0, 1, 9, 0, 7, 8, 0]', '[0, 7, 5, 0, 0, 0, 0, 0, 0]', '[0, 0, 0, 2, 5, 0, 6, 3, 0]', '[4, 0, 0, 0, 0, 8, 2, 9, 0]', '[0, 0, 0, 7, 0, 0, 0, 0, 0]', '[0, 0, 8, 0, 0, 0, 3, 5, 7]']
['[0, 0, 9, 0, 0, 0, 5, 6, 2]', '[0, 0, 0, 9, 0, 0, 0, 0, 0]', '[2, 0, 0, 0, 0, 3, 1, 7, 0]', '[0, 0, 0, 1, 9, 0, 7, 8, 0]', '[0, 7, 5, 0, 0, 0, 0, 0, 0]', '[0, 0, 0, 2, 5, 0, 6, 3, 0]', '[4, 0, 0, 0, 0, 8, 2, 9, 0]', '[0, 0, 0, 7, 0, 0, 0, 0, 0]', '[0, 0, 8, 0, 0, 0, 3, 5, 7]']

[killerrex]

Your matrix variable only stores the last row of your csv file... and I think is not what you want.

matrix = [row for row in puzzle]

Will read all the rows in a list (so matrix is a list of lists)

[sylas]

Where do I put your line.
[errorTraceback (most recent call last):
File "setup.py", line 15, in <module>
matrix = [row for row in puzzle]
File "setup.py", line 15, in <listcomp>
matrix = [row for row in puzzle]
ValueError: I/O operation on closed file.][/error]

[sylas]

With Larz's book I found:
for i in range(9):
matrix[i]=eval(matrix[i])

[killerrex]

What I was suggesting is this:

import csv
 
with open('numbers.csv', newline='') as csvfile:
    puzzle=csv.reader(csvfile, delimiter=' ', quotechar='|')
    # Read all the rows so you get
    # matrix = [[0, 0, 9, 0, 0, 0, 5, 6, 2], [0, 0, 0, 9, 0, 0, 0, 0, 0], ...]
    matrix = [row for row in puzzle]

# If now you want to print the matrix
for row in matrix:
    print(', '.join(row))

# Or transform it to integer matrix and not just strings... assuming all the elements are integers.
matrix =[[int(s) for s in row] for row in matrix]

About using eval... avoid it as much as you can. It is useful and powerful, specially when you are a noob but almost anything you can do with eval you can do it better in another way without the risk of explosion (not to mention the huge security problem)