how do i process a file while making a flask server?

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how do i process a file while making a flask server?
I have my code her. I was wondering how do I get this file to even be recognized or saved as a local variable in the Python code? (the file is a csv btw). Here is the image
from flask import Flask
from flask_restful import Api, Resource, reqparse
app = Flask(__name__)
api = Api(app)
class Dataframe(Resource):
def post(self, name):
parser = reqparse.RequestParser()
parser.add_argument("data")
args = parser.parse_args()[enter image description here][1]
return args, 201
api.add_resource(Dataframe, "/<string:name>")
app.run(debug=True)
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