Copy the browser's system's clipboard into a variable in the Python kernel of a notebook potentially hosted remotely (i.e. on a different system)

notebook_clipboard.py

def get_notebook_clipboard(variable_name:str) -> None:
    """Called on its own cell, 
    assigns the value of the browser's clipboard to the Python `variable`,
    available after the cell has run.
    This is due to the issue that the system clipboard of the notebook may differ (remote)"""
    from IPython.display import HTML
    HTML(f"""<script>
    console.log('Reading clipboard...');
    navigator.clipboard.readText().then(text => IPython.notebook.kernel.execute(`{variable_name} = "${'text'}"`));
    console.log('...Clipboard read.');
    </script>""")

pyperclip module is great, but obviously when dealing with remote Jupyter notebooks things get hairy as there are two systems involved and the clipboard wanted is clientside, but the kernel is serverside. Luckily the browser's JS is run clientside, while the python kernel is serverside (remote).
IPython.notebook.kernel.execute is added to the cell queue, hence why it is essential to get the variable in a different cell.