Tornado Instant WebAPI 
This is a library for automatically generating Tornado web API server from Python object with Type Hints.
Installation
pip install git+https://github.com/Hiroshiba/tornado_instant_webapiUsage
You can make web API from Python object: Classes, Modules, Dicts, Objects.
This is an example of starting API server from a class.
import tornado.ioloop
from tornado_instant_webapi import make_application
class Calculator(object):
@staticmethod
def double(number: float) -> float:
return 2 * number
if __name__ == '__main__':
app = make_application(Calculator)
app.listen(8000)
tornado.ioloop.IOLoop.current().start()Then, you can call API:
$ curl http://localhost:8000/double?number=100
200.0Original type parameter
You can use an original type easily, by adding the encoder or decoder.
This is the example for using NumPy.
import tornado.ioloop
from tornado_instant_webapi import common_converter, make_application
import json
import numpy
class NumpyCalculator(object):
@staticmethod
def sum(array: numpy.ndarray) -> float:
return array.sum()
def nparray_decoder(s: str):
return numpy.asarray(json.loads(s))
if __name__ == '__main__':
common_converter.register_new_type(
key='nparray',
t=numpy.ndarray,
decoder=nparray_decoder,
)
app = make_application(NumpyCalculator)
app.listen(8000)
tornado.ioloop.IOLoop.current().start()Then, you can call API:
$ curl --globoff http://localhost:8000/sum?array=[1,2,3]
6Nested object
This library can make web API from nested Python object.
if __name__ == '__main__':
nested = {
'Calculator': Calculator,
'NumpyCalculator': NumpyCalculator,
}
app = make_application(nested, string_case='snake')
app.listen(8000)
tornado.ioloop.IOLoop.current().start()Then, you can call API:
$ curl http://localhost:8000/calculator/double?number=100
200.0
$ curl --globoff http://localhost:8000/numpy_calculator/sum?array=[1,2,3]
6Sample Code
Image Converter is the sample web API server for the image convert.
License
MIT License, see LICENSE.
