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"""Example API using marshmallow fields as type annotations.
Requires marshmallow and dateutil.
$ pip install marshmallow python-dateutil
To run the example:
$ hug -f examples/marshmallow_example.py
Example requests using HTTPie:
$ http :8000/dateadd value==1973-04-10 addend==63
$ http :8000/dateadd value==2015-03-20 addend==525600 unit==minutes
"""
import datetime as dt
import hug
from marshmallow import fields
from marshmallow.validate import Range, OneOf
@hug.get("/dateadd", examples="value=1973-04-10&addend=63")
def dateadd(
value: fields.DateTime(),
addend: fields.Int(validate=Range(min=1)),
unit: fields.Str(validate=OneOf(["minutes", "days"])) = "days",
):
"""Add a value to a date."""
value = value or dt.datetime.utcnow()
if unit == "minutes":
delta = dt.timedelta(minutes=addend)
else:
delta = dt.timedelta(days=addend)
result = value + delta
return {"result": result}
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