[Python #YFB-256906] Re: trouble getting drilsdown into unidata-workshop conda env

Folks, I wanted to have my class get drilsdown into their "unidata-workshop" environment. I know, we should rename the environment as my course number. But we are trying to work from success and then adapt, and are still playing close to the base. 

Here is the error:  

1. I added ipywidgets and drilsdown to the environment.yml file as shown here. 

   - ipywidgets

   - pip:

     - python-awips

     - mpldatacursor

     - drilsdown

I executed conda env update -f environment.yml

It appeared to install both new packages. No problems. 

2. The beloved incantation

source activate unidata-workshop 

3. I set the necessary path

(unidata-workshop) bash-3.2$ export IDV_HOME=/Applications/IDV_5.4u1/ 

4. jupyter notebook

5. In a notebook code cell, 

%reload_ext drilsdown

gets this error

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-2-06399fbebf41> in <module>()
----> 1 get_ipython().run_line_magic('reload_ext', 'drilsdown')

…gibberish

//anaconda/envs/unidata-workshop/lib/python3.6/importlib/_bootstrap_external.py in _validate_bytecode_header(data, source_stats, name, path)

ImportError: bad magic number in 'drilsdown': b'\x03\xf3\r\n'