load .npz file in python

Question

I generated a dataset about 7 hours and saved it as

np.savez("/content/gdrive/My Drive/allc.npz", all=all, lab=lab)

Then, I opened and check the file

d=np.load("/content/gdrive/My Drive/allc.npz")
all=d["all"]
l=d["lab"]
all.shape

And, it worked perfectly

But, today, i opened the file using np.load it shows

BadZipFile: File is not a zip file

What is happened and what to do. Any suggestion

Thank you

This is not a programming question. Your problem seems to be that your original working .npz file has been overwritten, replaced, or corrupted. Most likely you overwrote it by mistake. — John Zwinck
– John Zwinck, Commented Nov 30, 2019 at 7:13
You should restore the correct file from your backup system, or re-run the program which generated it in the first place if you don't have backups. — John Zwinck
– John Zwinck, Commented Nov 30, 2019 at 11:35

Prachi · Accepted Answer · 2023-02-02 21:51:37Z

2

Another possibility is that the .npz file is not fully available to start working, as mentioned in the first comment.

In my case, I wanted to load a local .npz file on a google Colab, while uploading I tried to load it and received the BadZipFile: File is not a zip file error. Later, I realized the uploading circle was still incomplete.

So make sure .npz is fully available.

answered Feb 2, 2023 at 21:51

Prachi

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1 Comment

Mateusz Dorobek Over a year ago

The same problem when working locally. A little patience after creating the file to load it again was enough :)

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