How do I run a command in a Jupyter notebook?

Question

In a notebook I have the following in a cell:

   cwd = os.getcwd()
   run cwd + "/plot_data.py"

I get the error:

ERROR:root:File `'cwd.py'` not found.

Apparently, run thinks I am trying to run a python file "cwd.py" with the options "+" and "plot_data.py".

Actually I am trying to run a file plot_data.py located in cwd

Answer 1

Create the full file name, and pass it to run with the $ prefix:

file = cwd + "/plot_data.py"
run $file

In

run cwd + "/plot_data.py"

cwd is the file parameter, to be run, and '+' and "/plot..." are arguments that get passed to it. This isn't a Python expression (which would preform the string join).