rm_notebook.py

import os, sys, io

print(sys.argv[1])
infile = open(sys.argv[1], encoding="utf8")
data = infile.read()
infile.close()
outfile = open(sys.argv[1], "w", encoding="utf8")

buf = io.StringIO(data)
first_inline = False
is_code_cell = False
for line in buf:
    # can't comment out first inline that is always in the first cell
    if '"cell_type":' in line:
        is_code_cell = '"code"' in line
        
    if is_code_cell:
        if '%matplotlib inline' in line:
            if first_inline:
                line = line.replace("%matplotlib inline", "#%matplotlib inline")
            first_inline = True
        
        line = line.replace("%matplotlib notebook", "#%matplotlib notebook")
        line = line.replace("time.sleep", "#time.sleep")
        line = line.replace("fig.canvas.draw", "#fig.canvas.draw")
        line = line.replace("plt.gcf().canvas.draw", "#plt.gcf().canvas.draw")
    outfile.write(line)

outfile.close()