Simple notebook startup error

[John Bartelt]

--->jupyter notebook

.

.

.

execution error: "http://localhost:8888/tree" doesn’t understand the “open location” message. (-1708)

Do I have something wrong with my configuration?

[Thomas Kluyver]

No, it's a bug that's cropped up with an update to OS X. It sounds like it might need fixing in Python. There's some discussion about it here:
https://github.com/jupyter/notebook/issues/2438

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[Andrew Jaffe]

Just for search-ability and completeness:

• It can be fixed by setting `browser=webbrowser.get("Safari")` in .jupyter/jupyter_notebook_config.py [or "firefox", but not, at present "chrome" -- which is an unrelated issue that is due to be fixed in the next Python releases].
  
• It is a manifestation of an issue in the python standard library module `webbrowser.py` -- reported at http://bugs.python.org/issue30392
  
• But it is *really* a bug in macOS introduced with the Sierra 10.12.5 update: the `osascript` command doesn't work with `open location <url>` which is meant to open the default browser at that <url>. 
  
• Strangely, you can still `tell application "safari" to open location <url>" in osascript.
  
• Even more strangely, the applescript *does* work in the AppleScript editor, just not in `osascript`. I have filed a radar at https://bugreport.apple.com but others should feel free/encouraged to follow suit.

Andrew

On 18/05/2017 20:57, Thomas Kluyver wrote:

> No, it's a bug that's cropped up with an update to OS X. It sounds like it might need fixing in Python. There's some discussion about it here: https://github.com/jupyter/notebook/issues/2438

> 

> On 18 May 2017 at 19:57, John Bartelt wrote:

> 

>     $ jupyter notebook

>     ....