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webargs_example.py
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webargs_example.py
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import datetime as dt
from flask import Flask, jsonify
from webargs import fields, validate
from webargs.flaskparser import use_args, use_kwargs
app = Flask(__name__)
hello_args = {"name": fields.Str(missing='Friend')}
@app.route('/')
@use_args(hello_args)
def index(args):
return jsonify({"message": "Welcome, {}!".format(args['name'])})
add_args = {"x": fields.Float(required=True), "y": fields.Float(required=True)}
@app.route('/add', methods=['POST'])
@use_kwargs(add_args)
def add(x, y):
return jsonify({"result": x+y})
dateadd_args = {
"value": fields.Date(required=False),
"addend": fields.Int(required=True, validate=validate.Range(min=1)),
"unit": fields.Str(missing="days", validate=validate.OneOf(["minutes", "days"])),
}
@app.route("/dateadd", methods=["POST"])
@use_kwargs(dateadd_args)
def dateadd(value, addend, unit):
value = value or dt.datetime.utcnow()
if unit == "minutes":
delta = dt.timedelta(minutes=addend)
else:
delta = dt.timedelta(days=addend)
result = value + delta
return jsonify({"result": result.isoformat()})
if __name__ == '__main__':
app.run(debug=True)