count the number of lines in your jupyter notebooks

recursive_line_count.py

from glob import glob
from json import load

def loc(nb):
    cells = load(open(nb))["cells"]
    return sum(len(c["source"]) for c in cells)

root_folder = "~"
summation = 0
for File in glob(root_folder+"/**/*.ipynb", recursive=True):
    summation += loc(File)

print(summation)