flask jsonify returns returns Decimal object as string instead of float-CodePudding

The jsonify function in flask seems to return strings for all Decimal values instead of floats. Is there a builtin way to go around this?

In the meantime, I've had to manually remap it, but would like to avoid this if possible

from decimal import Decimal

result = {
    k: (float(v) if isinstance(v, Decimal) else v)
    for k, v in result.items() 
}

return jsonify(result)

CodePudding user response：

I dont get this error, what exactly are you trying to return?

from flask import jsonify
from decimal import Decimal
v = Decimal(0.1)
return jsonify({"0.1": float(v)})

-->

{
    "0.1": 0.1
}

without conversion:

v = Decimal(0.1)
return jsonify({"0.1": v})

{
    "0.1": 0.1000000000000000055511151231257827021181583404541015625
}

Also, make sure you check the "raw data" of the return, not the prettyprinted or some other format that your browser might use.

CodePudding user response：

Solution: just use FastAPI instead