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Editorial Team
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Asked: 2026-06-15T18:50:13+00:00

I try to get iPython and the notebook to work but I get this

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I try to get iPython and the notebook to work but I get this message: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 13: ordinal not in range(128). I read this: Ipython on Windows:

  • Recent versions of IPython (as of at least 0.12.1) use %USERPROFILE% (typically C:\Users\ under Vista and 7, or C:\Documents and Settings\ under XP) and store your configuration in a %USERPROFILE%.ipython directory. Previous versions of IPython have required manually setting a %HOME% environment variable.
    If you have non-ascii characters in your username and you get a UnicodeError crash on startup, you may need to manually set %HOME% to a directory with an ASCII-only name anyway (a directory like C:\home may be good enough if you’re the only user of your computer). This has not been tested on recent versions of IPython, however.

I have a user name with non-ascii characters. It looks like this is the solution but how do I fix it? I’m new to this and knows where to change the variables but I do not know what to write. I have created a folder c:\ipython that I would like to use and I run Windows 7 Home Edition. Probably easy to fix if you know how…

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1 Answer

  1. Editorial Team

    Fixed: Changed environment variables: IPYTHON_DIR was set to the folder c:\ipython. Tried many times with IPYTHONDIR but it did not work.

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