Write array to .txt-file

Question

In Python I need to write a list of numpy-arrays (see attached picture) to a txt.-file and then reuse that original list of arrays in a new python-file. How can I do that?

read_files = open("read_files.txt","w+")

content = str(df)

read_files.write(content)
read_files.close()

Then in the new python-file I did:

file = open("read_files.txt", "r")
content = file.read()

But when I want to slice the list of arrays in the new python-file I get the following error:

TypeError: string indices must be integers

If you want to reuse this data, don't use .txt files; use pickle for data serialization. — anymous, Mar 19 '23 at 16:50
Does this answer your question? [Python, Pandas : write content of DataFrame into text File](https://stackoverflow.com/questions/31247198/python-pandas-write-content-of-dataframe-into-text-file) — tevemadar, Mar 19 '23 at 16:52
@yessir22 Python errors come with a stack trace above them that you'll want to include when asking folks about errors (they typically contain important information). — Mike 'Pomax' Kamermans, Mar 19 '23 at 16:54

score 0 · Accepted Answer · answered Mar 19 '23 at 16:49

0

Use np.save for 3D arrays:

arr = np.random.random((20, 10, 5))

np.save('arr', arr)  # extension .npy

arr2 = np.load('arr.npy')

Note: the file is not human readable.

Output:

>>> np.all(arr2 == arr)
True

answered Mar 19 '23 at 16:49

Corralien

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Write array to .txt-file

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