mbr / jsonext

Well-structured helpers to help serializing commonly encountered structures to JSON.

jsonext

jsonext makes it easy to serialize objects outside of the standard Python primitives to JSON:

>>> import jsonext
>>> from datetime import datetime
>>> jsonext.dumps(datetime.now())
'"2014-03-22T22:17:18.304528+00:00"'
>>> jsonext.dumps(i**2 for i in range(10))
'[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]'

It uses mixins to the standard encoder to achieve this and is easily reuse- and extensible. Check out the documentation for details.

jsonext's Issues

Unexpected encoding of pandas DataFrame

Not sure where to turn for help, but I'm having a small problem trying to encode a pandas DataFrame. Here's my encoder class:

class JSONEncoder(jsonext.JSONEncoder):
def default(self, obj):
# We make DataFrames look like the tabular data d3 expects.
if isinstance(obj, pd.DataFrame):
# values
arr = obj.to_records()
# keys
names = arr.dtype.names
result = [dict(zip(names, x)) for x in arr]
print ">>> result", result
return result
return super(JSONEncoder, self).default(obj)

(Note the print statement.)

Here's a real simple DataFrame:

import pandas as pd
df = pd.DataFrame(x)
df
a1 a2
0 3 6

and here's what happens:

JSONEncoder().encode(df)
result [{'a1': 3, 'index': 0, 'a2': 6}]
'[{"a1": "3", "index": "0", "a2": "6"}]'

There's that print statement output showing that the three values are indeed integers. However, in the generated JSON string, they have all been turned into strings. Is this a problem with my encoder or with jsonexit.JSONEncoder?

Thx...

(issue created in error)

(issue created in error)

Include documentation in source distribution

The source distribution (as published at PyPI) does not include the documentation source. Please ensure the documentation source is part of each source distribution.

Add a clear grant of license

Please add the full license text in a document (e.g. ‘LICENSE.Expat’ in the project root).

Also, add a text (maybe in the README) that clearly grants license to the recipient. A suggestion for the grant of license:

This is free software; you may copy, modify, and/or distribute this work
under the terms of the Expat license as published by James Clark.
See the ‘LICENSE’ file for full license conditions.