How to dump a dict to a JSON file? How to dump a dict to a JSON file? python python

How to dump a dict to a JSON file?


import jsonwith open('result.json', 'w') as fp:    json.dump(sample, fp)

This is an easier way to do it.

In the second line of code the file result.json gets created and opened as the variable fp.

In the third line your dict sample gets written into the result.json!


Combine the answer of @mgilson and @gnibbler, I found what I need was this:

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, jf.close()

It this way, I got a pretty-print json file.The tricks print >> f, j is found from here: http://www.anthonydebarros.com/2012/03/11/generate-json-from-sql-using-python/


d = {"name":"interpolator",     "children":[{'name':key,"size":value} for key,value in sample.items()]}json_string = json.dumps(d)

Of course, it's unlikely that the order will be exactly preserved ... But that's just the nature of dictionaries ...


matomo