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I've got an 18x18 2d numpy array (it's a confusion matrix)...and I need/would like to display it as a table in an ipython notebook.

When I simply print it out, it displays with overlap--the rows are so long they take up two lines.

Is there a library that will allow me to print this array in a sort of spreadsheet format?

wjandrea
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Chris
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2 Answers2

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You can use Pandas for that.

import pandas as pd
print pd.DataFrame(yourArray)
Konstantinos Michael
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Note: Konstantinos proposal holds only for 1-D and 2-D arrays!

You can use numpy.array2string():

from pprint import pprint
import numpy as np

array = np.array([[1,2,3], [4,5,6]])
print(np.array2string(array).replace('[[',' [').replace(']]',']'))

Output:

 [1 2 3]
 [4 5 6]

See also: Printing Lists as Tabular Data

guyomd
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