[IPython-dev] sample code using ipython api to get a notebook and edit it

[Thomas Kluyver]

On 17 November 2014 06:26, Robert Alexander <roalexan at microsoft.com> wrote:

> with open('test.ipynb', 'r+') as f2:


You're opening one file, reading from it, and then writing back to the same
file descriptor. That writes the new content after the end of the old
content, resulting in an invalid notebook.

To modify files, we would normally open, read, close, make the changes we
want, open, write, close.

Thomas
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