Sending data from a python dictionary to a javascript file

Question

I'm new to python and javascript so I don't know much about their data sharing capabilities. Below is the dictionary (whose data I want to send) in a database file I have called database.py. How can I take this data and send it to my javascript file "Calendar.js" so I can use it in a function later?

agenda = {'id' : num,
                  'eventName' : eventName,
                  'eventType' : eventType,
                  'location' : location,
                  'date' : date,
                  'time' : time,
                  'compName' : compName,
                  'attire' : attire,
                  'additional' : additional}

Nepho · Accepted Answer · 2017-12-06 14:42:25Z

1

As a general rule, consider that JSON (JavaScript Object Notation) is the goto-format if you want to exchange data with javascript.

From Python, you can use the json module to generate such data.

Example:

d = {"name":"interpolator",
     "children":[{'name':key,"size":value} for key,value in sample.items()]}
j = json.dumps(d, indent=4)
f = open('sample.json', 'w')
print >> f, j
f.close()

Now, for the actual communication with javascript, you can either write the JSON in a file and process it asynchronously, or use something like protobuf/grpc.

answered Dec 6, 2017 at 14:42

Nepho

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4 Comments

user9040628 Over a year ago

Thank you, so I use this in my python file but how do I retrieve that data in my javascript file?

Nepho Over a year ago

Unless you're running a javascript back-end (for example, Node.js), you will have a hard time getting the content of a file. You could probably use websockets for communication between the back-end and the website's front-end.

user9040628 Over a year ago

Ah ok that makes sense. Does the file it is written in matter? Like should it been done in my html page or the python database etc.?

Nepho Over a year ago

Well, it depends. If you want to load that data statically (i.e., load it once whenever someone loads the page), you can probably put it directly in your html page. You can also store it in a database and have javascript in the page load it. To be honest the format/way of storing it doesn't matter much.

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