How to write numpy.array() output literally to text file

Question

I have the following function in python:

 def writeWinningBoards():
    f = open("goodBoards.txt", "a")
    for row in tableros:
        for index, value in enumerate(row):
            if value == 1:
                row[index] = 'x'
            elif value == 2:
                row[index] = ' '
            elif value == 3:
                row[index] = 'o'
        row = np.array(row).reshape(3,3)
        f.write(row)
        print row
    f.close()

How can a I write to a file, the console representation of the array, when row is printed I have this:

 ['o' 'o' 'x']
 ['x' 'x' 'x']
 ['o' 'x' 'o']

but in the file I get something like this:

 x    o   x      o x        x o      xo    o  x

How could I do this ? I just want a user-friendly way of storing tic tac toe gameboards for reading.

hd1 · Accepted Answer · 2015-11-14 04:43:33Z

1

Many ways, the one I'd suggest is:

row_reshaped = np.array(row).reshape(3,3)
row_reshaped_as_base_array = row_reshaped.tolist()
row_reshaped_as_json = json.dumps(row_reshaped_as_base_array
with open("goodBoards.txt", "a") as f:
   f.write(row_reshaped_as_json)

I don't do method chaining and find list comprehensions a bit too terse for me.

answered Nov 14, 2015 at 4:43

hd1

34.9k5 gold badges83 silver badges95 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Akavall · Accepted Answer · 2015-11-14 04:53:47Z

0

Here is one option:

import numpy as np
import pandas as pd

a = np.array([["x", "o"], ["o", "x"]])

df = pd.DataFrame(a)
df.to_csv("my_file.txt", header=False, index=False, sep=" ")

Result:

$ cat my_file.txt
x o
o x

answered Nov 14, 2015 at 4:53

Akavall

86.8k58 gold badges214 silver badges260 bronze badges

Comments

David Morton · Accepted Answer · 2015-11-14 05:06:29Z

0

The difference between f.write(row) and print row isn't just that one writes to a file and the other writes to the screen. In python, the print statement will append a newline after each call, whereas the write method on an open file object will not.

answered Nov 14, 2015 at 5:06

David Morton

744 bronze badges

1 Comment

Andres Zapata Over a year ago

This isn't' an answer.

Collectives™ on Stack Overflow

How to write numpy.array() output literally to text file

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related