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Can we read local file from Sagecell

asked 2017-10-27 16:01:43 +0200

Niyamabrata gravatar image

Can we read local file from Sagecell? I work with SageMathCell embedded on blog.

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Hmm, that is a good question. I'd assume not unless you can read from the internet - some Sage functions allow URLs in them. But it wouldn't have access to your file system.

kcrisman gravatar imagekcrisman ( 2017-10-27 18:37:47 +0200 )edit

Thank you...

Niyamabrata gravatar imageNiyamabrata ( 2017-10-27 19:17:30 +0200 )edit

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answered 2017-10-28 12:18:53 +0200

tmonteil gravatar image

No, you can not read a local file from Sagecell. Sagecell is like any webserver, imagine the security hole if an arbitrary webserver you connect to with a webbrowser could read any file on your hard disk ! If you want to let Sagecell access some file, you have to serve it publically, this works well, see the answer of your other question.

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Thanks a lot...

Niyamabrata gravatar imageNiyamabrata ( 2017-10-28 12:48:51 +0200 )edit

answered 2018-03-05 11:47:53 +0200

fh gravatar image

Yes, you can:

with open("/path/filename", 'r') as fin:
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This is a way to read local files into a SageMath notebook on your own computer, but it won't work on SageMathCell:

j.c. gravatar imagej.c. ( 2018-03-05 17:12:12 +0200 )edit

I tried it on and a reasonable output was produced for the file "/etc/hosts".

fh gravatar imagefh ( 2018-03-08 16:06:46 +0200 )edit

But that isn't local to YOUR computer, is it? Presumably whatever Google App Engine computer is running the cell server.

kcrisman gravatar imagekcrisman ( 2018-03-11 02:50:24 +0200 )edit

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Asked: 2017-10-27 16:01:43 +0200

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Last updated: Mar 05 '18