I would like to save the elements of `I`

in a CSV format. The current and desired outputs are attached.

```
import numpy as np
import csv
I=np.array([[0, 1],
[0, 3],
[1, 2],
[1, 4],
[2, 5],
[3, 4],
[3, 6],
[4, 5],
[4, 7],
[5, 8],
[6, 7],
[7, 8]])
with open('Test123.csv', 'w') as f:
writer = csv.writer(f)
# write the data
writer.writerows(I.T)
```

The current output is

The desired output is

### >Solution :

you can try using `writerow`

and create the comma separated

```
import numpy as np
import csv
I=np.array([[0, 1],
[0, 3],
[1, 2],
[1, 4],
[2, 5],
[3, 4],
[3, 6],
[4, 5],
[4, 7],
[5, 8],
[6, 7],
[7, 8]])
with open('Test123.csv', 'w') as f:
writer = csv.writer(f)
# write the data
writer.writerow(map(lambda x: f'{x[0]}, {x[1]}', zip(*I.T)))
```