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pythonjson
Amelio Vazquez-Reina
Amelio Vazquez-Reina

Reputation: 96284

Dumping multiple variables to disk in Json. One variable per line

Say I want to dump multiple variables to disk with Json. They way I usually do this is by creating my variables as entries in a dictionary and then dumping the dictionary to disk:

with open(p_out, 'wb') as fp:
    json.dump(my_dictionary, fp)

This creates a json file where the dictionary is saved in a long line:

{"variable_1": something, "variable_2" something_else, ...}

which I don't like. I would prefer to have my variables dumped into the text file with one variable per line, e.g something along these lines:

{variable_1: something\n
 variable_2: something\n
 variable_3: something_else}

Is there a way to do this with Json in Python?

Upvotes: 0

Views: 4843

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1121992

Set the indent option to 0 or more:

with open(p_out, 'wb') as fp:
    json.dump(my_dictionary, fp, indent=0)

From the documentation:

If indent is a non-negative integer, then JSON array elements and object members will be pretty-printed with that indent level. An indent level of 0, or negative, will only insert newlines. None (the default) selects the most compact representation.

Your example would be output as:

{
"variable_2": "something_else", 
"variable_1": "something"
}

Upvotes: 3

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