Using JSON Object inside string.format()?

Question

I have a Python3 script that takes an input HTML template and populates some data using this JSON and creates an output HTML.

Python Script -

with open('./jsonInp.json') as jsonFile:
    jsonData = json.load(jsonFile)

inp_f = open('brandedTemplate.html', 'r+')
htmlInp = inp_f.read().format(links = jsonData['links'])

My JSON File -

{
    "links" : {
        "one" : "www.one.com",
        "two" : "www.two.com",
    } 
}

Now using this in the input HTML like :

...
<a href={links.one}></a>
...

But this doesn't work. Neither does links['one'].

The JSON loading and everything works fine. I am also able to use arrays from .format function. Just can't find how to use this object anywhere. From type(jsonData['links']), I know its a Python dict.

Is there a way to use this in a html template?

Almost: remove the apostrophe: <a href={jsonData[links][one]}> — Jeronimo
– Jeronimo, Commented Apr 23, 2018 at 15:43

Rémi Sauvat · Accepted Answer · 2018-04-23 15:47:06Z

1

Your jsonData variable is a python dict. To access values in the format mini language you need to use {my_dict[my_key]}. Note that the key is not enclosed in quotes. To fix your example, the html input should be as follow:

...
<a href={links[one]}></a>
...

answered Apr 23, 2018 at 15:47

Rémi Sauvat

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CristiFati · Accepted Answer · 2018-04-24 01:16:32Z

0

According to [Python]: Format examples, you should use (templates like):

<a href={links[one]}></a>

as html format specifier (since [Python]: json.load(fp, *, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw) returns a dict).

Example:

>>> json_dict
{'links': {'one': 'www.one.com', 'two': 'www.two.com'}}
>>> href_text
'<a href={links[one]}></a>'
>>> href_text.format(links=json_dict["links"])
'<a href=www.one.com></a>'

edited Apr 24, 2018 at 1:16

answered Apr 23, 2018 at 15:43

CristiFati

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