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slides.py
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Mon, May 13, 12:32

slides.py
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#!/usr/bin/python
"""
This executable permits to generate an advanced presentation
from a Jupyter notebook.
The capabilities are:
- a server of reveal content
- a pptx (under developement)
- a beamer tex file (TODO)
"""
################################################################
import os
import subprocess
import shutil
import argparse
import nbformat
import count_slides
################################################################
def mergeNotebooks(notebook_files):
"Merges several notebooks in a single one named: talk.ipynb"
print "Merging notebooks {0}".format(notebook_files)
notebooks = [nbformat.read(f, as_version=4) for f in notebook_files]
cells = notebooks[0]['cells']
for n in notebooks[1:]:
cells += n['cells']
nbformat.write(notebooks[0], 'talk.ipynb')
################################################################
def launchSlideServer(options=""):
" Launch the HTTP server for reveal slides "
reveal_path = './reveal.js'
dir_name = os.path.dirname(__file__)
slides_config_file = os.path.join(dir_name, 'slides_config.py')
cmd = ('jupyter nbconvert --to=slides --config {1} --post serve ' +
'--ServePostProcessor.open_in_browser=False --reveal-prefix={0} {2} ' +
'talk.ipynb').format(reveal_path, slides_config_file, options)
print cmd
subprocess.call(cmd, shell=True)
################################################################
def executeNotebook(filename, options = ""):
" Request the execution of all cells "
print 'execute notebook: ', filename
dir_name = os.path.dirname(__file__)
slides_config_file = os.path.join(dir_name, 'slides_execute_config.py')
subprocess.call('jupyter nbconvert --to=notebook --output tmp.ipynb --config' +
' {0} {1}'.format(slides_config_file, filename), shell=True)
shutil.move('tmp.ipynb', filename)
subprocess.call('jupyter trust {0}'.format(filename), shell=True)
################################################################
def getNotebookFilenames(slides_path):
"""
When a directory is provided to the executable,
a file named 'slides' is searched for with
the expected list of ipython notebooks.
The list of notebooks to consider is then
returned.
"""
slides_file = os.path.join(slides_path, 'slides')
if not os.path.isfile(slides_file):
raise Exception("Cannot find slides file")
f = open(slides_file)
slides = [l.strip() for l in f.readlines()]
slides = [l for l in slides if not l == ""]
return slides
################################################################
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Slide launcher')
parser.add_argument("--execute", action='store_true',
help="Requests to execute all the notebooks launching the slides server")
parser.add_argument("--no_count", action='store_false',
help="Requests not to count slides generated")
parser.add_argument("notebooks", nargs='*',
help="The notebooks to associate in a presentation")
parser.add_argument("--internet", action='store_true',
help="Weather the http server should serve on the internet")
arguments = parser.parse_args()
if len(arguments.notebooks) == 1:
if os.path.isdir(arguments.notebooks[0]):
arguments.notebooks = getNotebookFilenames(arguments.notebooks[0])
if arguments.execute:
for n in arguments.notebooks:
executeNotebook(n)
mergeNotebooks(arguments.notebooks)
if arguments.no_count:
nb_slides = count_slides.countSlides(['talk.ipynb'])
print "*"*20
print "You generated a talk with {0} slides".format(nb_slides)
print "*"*20
if arguments.internet:
launchSlideServer(options="--ServePostProcessor.ip='*'")
launchSlideServer()
################################################################

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