python - Include carriage return correctly in iPython notebooks when writing using json.dump -

i'm trying generate ipython notebooks json files python. i'm not sure how write carriage returns file in cells i've specified cell_type markdown. i've tried double spaces, suggested here, , can markdown make new line specifying <br /> if include header specification markdown treats whole input header.

for instance:

import json  # single markdown cell dictionary cell = {   "cell_type" : "markdown",   "metadata" : {'collapsed': false, 'name': 'test'},   "source" : ["## header line",     "<br />",      "second line, not header...hopefully"], }  # create ipython notebook dictionary nbdict = { 'metadata': {}, \     'nbformat': 4,     'nbformat_minor': 0,     'cells': [cell]     }  open('test.ipynb', 'w') outfile:     json.dump(nbdict, outfile) 

then if open ipython notebook test.ipynb have following output:

header line second line, not header...hopefully

but it's in bold type, whole input being treated 1 line header.

how specify carriage returns properly, headers honoured single line, when i'm creating these notebooks?

markdown uses newlines separate lines, not html <br/> tags. include newlines in source lines; use double newlines separate paragraph elements (including headers):

cell = {     "cell_type": "markdown",     "metadata": {'collapsed': false, 'name': 'test'},     "source": [         "## header line\n\n",         "second line, not header...hopefully"     ], }