Google Co-laboratory notebook doesn't have the "Download as" dropdown menu item in "File" menu like standalone Jupyter does. How to download the notebook as PDF?
You can also run the solution of mayurmadnani directly on CO.
Therefor create a new Python workbook in CO and connect it to a runtime.
Install the necessary packages into the virtual machine with:
!apt-get install texlive texlive-xetex texlive-latex-extra pandoc
!pip install pypandoc
Mount your google drive to get access to your ipynb files
from google.colab import drive
drive.mount('/content/drive')
I had to copy the files from the drive to the working directory,
because the drive is/was mounted as read only.
!cp drive/My Drive/Colab Notebooks/Untitled.ipynb ./
Then you can run the converter.
!jupyter nbconvert --to PDF "Untitled.ipynb"
Then you can download the file in the left side panel.