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A fp is a file pointer used to write JSON formatted data into file. Python json module always produces string objects, not bytes objects, therefore, fp.
json. dump() method used to write Python serialized object as JSON formatted data into a file. json. dumps() method is used to encodes any Python object into JSON formatted String.
The dump() method is used when the Python objects have to be stored in a file. The dumps() is used when the objects are required to be in string format and is used for parsing, printing, etc, . The dump() needs the json file name in which the output has to be stored as an argument.
it would append the new data. the problem with this approach is that it literally appends the data so that it ends up like {... original data...}{ ...
Use json.dumps() instead. json.dump() needs a file object and dump JSON to it.
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