openapi3 1.0.1

Client and Validator of OpenAPI 3 Specifications

A Python OpenAPI 3 Specification client and validator for Python 3.

Validation Mode

This module can be run against a spec file to validate it like so:

python3 -m openapi3 /path/to/spec

Usage as a Client

This library also functions as an interactive client for arbitrary OpenAPI 3 specs. For example, using Linode’s OpenAPI 3 Specification for reference:

from openapi3 import OpenAPI
import yaml

# load the spec file and read the yaml
with open('openapi.yaml') as f:
    spec = yaml.safe_load(f.read())

# parse the spec into python - this will raise if the spec is invalid
api = OpenAPI(spec)

# call operations and receive result models
regions = api.call_getRegions()

# authenticate using a securityScheme defined in the spec's components.securtiySchemes
api.authenticate('personalAccessToken', my_token)

# call an operation that requires authentication
linodes  = api.call_getLinodeInstances()

# call an opertaion with parameters
linode = api.call_getLinodeInstance(parameters={"linodeId": 123})

# the models returns are all of the same (generated) type
print(type(linode))                      # openapi.schemas.Linode
type(linode) == type(linodes.data[0])    # True

# call an operation with a request body
new_linode = api.call_createLinodeInstance(data={"region":"us-east","type":"g6-standard-2"})

# the returned models is still of the correct type
type(new_linode) == type(linode)     # True

HTTP basic authentication and HTTP digest authentication works like this:

# authenticate using a securityScheme defined in the spec's components.securtiySchemes
# Tuple with (username, password) as second argument
api.authenticate('basicAuth', ('username', 'password'))

Roadmap

The following features are planned for the future:

• Request body models, creation, and validation.

• Parameters interface with validation and explicit typing.

• Support for more authentication types.

• Support for non-json request/response content.

• Full support for all objects defined in the specification.