Reading a JSON file using Python - JSONDecodeError Extra Data

I'm following along with https://realpython.com/python-json/. I'm using Python 3.8, on a Windows 10 machine, using IDLE.

I deviated a bit from the example.

>>> import json  >>>   >>> data1 = {      'president': {          'name': 'dumb-bell beetlebox',          'species': 'betelgusian'      }  }  >>> data2 = {      'emperor': {          'name': 'Ezekiel Wheel',          'species': 'klingon'      }  }  >>> data3 = {      'king': {          'name': 'tech shiny',          'species': 'two hundred'      }  }  >>>  >>> with open('data1_file.json', 'w') as wf:      json.dump(data1, wf)  >>> with open('data1_file.json', 'a') as af:      af.write('\n')      json.dump(data2, af)      af.write('\n')      json.dump(data3, af)          1  1  

This created the json file, with the data per line.

I then tried to read it.

>>> with open('data1_file.json', 'r') as rf:      data = json.load(rf)    Traceback (most recent call last):    File "<pyshell#139>", line 2, in <module>      data4 = json.load(rf)    File "D:\Program Files (x86)\Python38-32\lib\json\__init__.py", line 293, in load      return loads(fp.read(),    File "D:\Program Files (x86)\Python38-32\lib\json\__init__.py", line 357, in loads      return _default_decoder.decode(s)    File "D:\Program Files (x86)\Python38-32\lib\json\decoder.py", line 340, in decode      raise JSONDecodeError("Extra data", s, end)  json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 73)  

On the advice from a friend, who said there may have been extraneous data in the file -

>>> print(repr(open('data1_file.json').read()))  '{"president": {"name": "dumb-bell beetlebox", "species": "betelgusian"}}\n{"emperor": {"name": "Ezekiel Wheel", "species": "klingon"}}\n{"king": {"name": "tech shiny", "species": "two hundred"}}'  

Any help would be appreciated. Thank you.

https://stackoverflow.com/questions/66863757/reading-a-json-file-using-python-jsondecodeerror-extra-data March 30, 2021 at 09:48AM