When using flask.jsonify, the output is wrapped in square brackets, as opposed to the usual curly

I'm currently facing an issue with my Flask and jsonify setup. When I try to output JSON, it's coming back in array format with square brackets instead of the expected JSON object with curly brackets.

Does anyone have guidance on how to resolve this issue?

The function I'm working on takes text input, uses Spacy to tokenize it, and provides details about each token.

This is the code snippet:

@app.route('/api/<string:mytext>',methods=['GET'])
def myfunc(mytext):

    docx = nlp(mytext.strip())
    allData = ['Token:{},Tag:{},POS:{}'.format(token.text,token.tag_,token.pos_) for token in docx ]
    
    return jsonify(allData)

The current output is like this:

[
  "Token:\",Tag:``,POS:PUNCT", 
  "Token:test,Tag:VB,POS:VERB", 
  "Token:this,Tag:DT,POS:DET", 
]

I need the JSON response to follow the standard format with curly brackets so that my C# application can deserialize it correctly.

Appreciate any assistance. Thank you!

pythonjsonflaskflask-restfuljsonify

Answer №1

If you desire a Python dict to be generated by your list comprehension, it is important to keep in mind that the structure needs to initially be established as a list/Array enclosed in square brackets since the key names are consistent for each line or entity.

allData = [{'Token': token.text, 'Tag': token.tag_, 'POS': token.pos_} for token in docx]

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