Installing iPython 6.2.1 and Resolving ModuleNotFoundError Issues

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When attempting to run a script that requires the iPython library but encountering a `ModuleNotFoundError` instead, it is likely due to an unresolved dependency issue related to missing or incompatible versions of Python libraries.

Symptoms

-----

* Upon executing your Python script (e.g., `python san.py`) you receive the following error message:

```

Traceback (most recent call last):

File 'san.py', line 2, in

from IPython import getipython

ModuleNotFoundError: No module named 'IPython'

```

Solution

-----

To resolve this issue, follow these steps:

1. Check if the `iPython` library is installed on your system.

You can do so by navigating to your Python installation directory (typically found at `/usr/local/lib/python2.7/`) and then checking for a folder named `site-packages`. Within that folder, look out for an egg file or wheel package called `openmc-0.9.0-py2.7`.

If you find these files, it indicates that the necessary Python libraries are already installed.

2. Install iPython 6.x version

For installing iPython 6.x version use below command:

```bash

pip install ipython==6.*.*

```

3. Alternatively, if using an older version of Python (e.g., Python 2.7), you may need to resort to the Long Term Support (LTS) version of IPython.

To do so, execute these commands in your terminal or command prompt:

```bash

pip install ipython==5.*.*

```

4. Finally, try running your script again using iPython 6.x LTS by executing:

```

python -m ipython --version

```

Troubleshooting Tips

----------------

* Ensure that you have the correct version of Python and its packages installed on your system.

* When facing issues with specific libraries or versions, try downgrading to an earlier compatible release as a last resort.

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By following these steps and tips, you should be able to successfully install iPython 6.2.1 and resolve any associated `ModuleNotFoundError` errors that may arise during your Python development journey.

Install ipython 6.2.1