Convert Python Dictionary to JSON format

Question

I am creating a Python dictionary from a dataframe and the results contain a few thousand entries;

oxford_english = df.set_index('id')['name'].to_dict()
# Example result:
{12345: 'companyA'}

I need to convert the dictionary by changing the current keys and values into the following format:

{"id": "12345", "name": "CompanyA"}

I know how to change values and keys in a dictionary but I can't figure out how to split the entries into new key value pairs.

The reason for all of this is because I need to pass the dictionary as JSON to a Web API.

Any suggestions?

Possible duplicate of Convert this python dictionary into JSON format? — Ashkar
– Ashkar, Commented May 5, 2017 at 15:49

bcedu · Accepted Answer · 2017-05-05 15:45:01Z

1

If you really want a json you should use the method 'to_json' of DataFrames:

df.to_json().

Here the documentation: pandas.DataFrame.to_json

answered May 5, 2017 at 15:45

bcedu

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2 Comments

FunnyChef Over a year ago

That was it! Thank you! I couldn't figure out, via the docs if I can select only certain columns from the DF to convert to JSON. Am I missing it? I am dumping the desired columns to a new DF as a work around.

bcedu Over a year ago

You could just create a dataframe with the desired columns from the original: newdf = df.iloc[:, 0:5] (here i get the columns from 0 to 5). Then use the method with the new dataframe.

gzc · Accepted Answer · 2017-05-05 16:03:59Z

0

Your title seems misleading. If I didn't misunderstand, you want get a format of dictionary from DataFrame.

In [25]: df = pd.DataFrame({'id':[12345, 12346], 'name': ['CompanyA', 'CompanyB
    ...: ']})

In [26]: df
Out[26]:
      id      name
0  12345  CompanyA
1  12346  CompanyB
In [29]: df.to_dict(orient='records')
Out[29]: [{'id': 12345, 'name': 'CompanyA'}, {'id': 12346, 'name': 'CompanyB'}]

answered May 5, 2017 at 16:03

gzc

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