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pythonnumpyheader
Edamame
Edamame

Reputation: 25366

python numpy.savetxt header has extra character #

I am using the following to save the numpy array x with a header:

np.savetxt("foo.csv", x, delimiter=",", header="ID,AMOUNT", fmt="%i")

However, if I open "foo.cv", the file looks like:

# ID,AMOUNT
21,100
52,120
63,29
:

There is an extra # character in the beginning of the header. Why is that and is there a way to get rid of it?

Upvotes: 22

Views: 27696

Answers (2)

vittorio
vittorio

Reputation: 143

it inserts the # because that line is a comment, and the default character for comments is the symbol #,

If you want to get rid of it, pass comments='' as option to savetxt.

numpy.savetxt('reference_vect_tool.00001.txt',riferimento,fmt='%.6f',header="reference", comments="")

Upvotes: 0

Carl Groner
Carl Groner

Reputation: 4359

The header and footer text are added as comments. If you want to change the comment identifier, pass the comments option (the default is #):

np.savetxt("foo.csv", x, delimiter=",", header="ID,AMOUNT", 
           fmt="%i", comments='')

As documented here.

Upvotes: 43

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