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rapid-api-client

Rapidly develop your API clients using decorators and annotations

  • 0.6.0
  • PyPI
  • Socket score

Maintainers
1

Github PyPi Python CI

🙏 As a Python Backend developer, I've wasted so much time in recent years writing the same API clients over and over using Requests or HTTPX; At the same time, I could be so efficient by using FastAPI for API servers; I just wanted to save time for my upcoming projects, thinking that other developers might find it useful too.

Rapid Api Client

Library to rapidly develop API clients in Python, based on Pydantic and Httpx, using almost only decorators and annotations.

✨ Main features:

  • ✏️ You don't write any code, you only declare the endpoints using decorators and annotations.
  • 🪄 Pydantic validation for Header, Query, Path or Body parameters.
  • 📤 Support Pydantic to parse and validate reponses content so your method returns a model object if the response is OK.
  • 📥 Also support Pydantic serialization for Body with POST-like opeations.
  • 🏗️ Does not reimplement any low-level http related logic (like auth, transport ...), it simply uses httpx.Client like you are used to, decorators simply build the httpx.Request for you.
  • ⚡️ Support async operations, because httpx and asyncio are just amazingly fast.

Usage

Install the library

pip install rapid-api-client

Declare your API endpoints using decorators and annotations, the method does not need any code, it will be generated by the decorator, just write ... or pass or whatever, it won't be called anyway 🙈.

class GithubIssuesApi(RapidApi):

    @get("/repos/{owner}/{repo}/issues", response_class=TypeAdapter(List[Issue]))
    def list_issues(self, owner: Annotated[str, Path()], repo: Annotated[str, Path()]): ...

    @get("/repos/{owner}/{repo}/releases", response_class=TypeAdapter(List[Release]))
    def list_releases(self, owner: Annotated[str, Path()], repo: Annotated[str, Path()]): ...

Use it

    from httpx import Client

    api = GithubIssuesApi(Client(base_url="https://api.github.com"))
    issues = api.list_issues("essembeh", "rapid-api-client", state="closed")
    for issue in issues:
        print(f"Issue: {issue.title} [{issue.url}]")

Features

Http method

Any HTTP method can be used with http decorator

from rapid_api_client import RapidApi, http 


class MyApi(RapidApi):

    @http("GET", "/anything")
    def get(self): ...

    @http("POST", "/anything")
    def post(self): ...

    @http("DELETE", "/anything")
    def delete(self): ...

Convenient decorators are available like get, post, delete, put, patch

from rapid_api_client import RapidApi, get, post, delete

class MyApi(RapidApi):

    @get("/anything")
    def get(self): ...

    @post("/anything")
    def post(self): ...

    @delete("/anything")
    def delete(self): ...

To use you API, you just need to instanciate it with a httpx.Client like:

from httpx import Client

api = MyApi(Client(base_url="https://httpbin.org"))
resp = api.get()
resp.raise_for_status()

async support

Since version 0.5.0, the default client and annotations are synchronous, async decorators and clients are in rapid_api_client.async_ package.

RapidApiClient support both sync and async methods, based on httpx.Client and httpx.AsyncClient.

To build an asynchronous client:

  • use common RapidApi class with an AsyncClient or use AsyncRapidApi class
  • use annotations like get or post from rapid_api_client.async_ package

Example:

from rapid_api_client import RapidApi
from rapid_api_client.async_ import get, post, delete
from httpx import AsyncClient

class MyApi(RapidApi):

    @get("/anything")
    async def get(self): ...

    @post("/anything")
    async def post(self): ...

    @delete("/anything")
    async def delete(self): ...

# Usage
api = MyApi(AsyncClient(base_url="https://httpbin.org"))
resp = await api.get()

You can also use the dedicated AsyncRapidApi class which provides a default factory for an AsyncClient:

from rapid_api_client.async_ import get, post, delete, AsyncRapidApi

class MyApi(AsyncRapidApi):

    @get("https://httpbin.org/anything")
    async def get(self): ...

    @post("https://httpbin.org/anything")
    async def post(self): ...

    @delete("https://httpbin.org/anything")
    async def delete(self): ...

# Usage
api = MyApi()
resp = await api.get()

Response class

By default methods return a httpx.Response object and the http return code is not tested (you have to call resp.raise_for_status() if you need to ensure the response is OK).

But you can also specify a class so that the response is parsed, you can use:

  • httpx.Response to get the response itself, this is the default behavior
  • str to get the response.text
  • bytes to get the response.content
  • Any Pydantic model class (subclass of BaseModel), the json will be automatically validated
  • Any Pydantic-xml model class (subclass of BaseXmlModel), the xml will be automatically validated
  • Any TypeAdapter to parse the json, see pydantic doc

Note: When response_class is given (and is not httpx.Response), the raise_for_status() is always called to ensure the http response is OK

class User(BaseModel): ...

class MyApi(RapidApi):

    # this method return a httpx.Response
    @get("/user/me")
    def get_user_raw(self): ...

    # this method returns a User class
    @get("/user/me", response_class=User)
    def get_user(self): ...

Path parameters

Like fastapi you can use your method arguments to build the api path to call.

class MyApi(RapidApi):

    # Path parameter
    @get("/user/{user_id}")
    def get_user(self, user_id: Annotated[int, Path()]): ...

    # Path parameters with value validation
    @get("/user/{user_id}")
    def get_user(self, user_id: Annotated[PositiveInt, Path()]): ...

    # Path parameters with a default value
    @get("/user/{user_id}")
    def get_user(self, user_id: Annotated[int, Path(default=1)]): ...

    # Path parameters with a default value using a factory
    @get("/user/{user_id}")
    def get_user(self, user_id: Annotated[int, Path(default_factory=lambda: 42)]): ...

Query parameters

You can add query parameters to your request using the Query annotation.

class MyApi(RapidApi):

    # Query parameter
    @get("/issues")
    def get_issues(self, sort: Annotated[str, Query()]): ...

    # Query parameters with value validation
    @get("/issues")
    def get_issues(self, sort: Annotated[Literal["updated", "id"], Query()]): ...

    # Query parameter with a default value
    @get("/issues")
    def get_issues(self, sort: Annotated[str, Query(default="updated")]): ...

    # Query parameter with a default value using a factory
    @get("/issues")
    def get_issues(self, sort: Annotated[str, Query(default_factory=lambda: "updated")]): ...

    # Query parameter with a default value
    @get("/issues")
    def get_issues(self, my_parameter: Annotated[str, Query(alias="sort")]): ...

Header parameter

You can add headers to your request using the Header annotation.

class MyApi(RapidApi):

    # Header parameter
    @get("/issues")
    def get_issues(self, x_version: Annotated[str, Header()]): ...

    # Header parameters with value validation
    @get("/issues")
    def get_issues(self, x_version: Annotated[Literal["2024.06", "2024.01"], Header()]): ...

    # Header parameter with a default value
    @get("/issues")
    def get_issues(self, x_version: Annotated[str, Header(default="2024.06")]): ...

    # Header parameter with a default value using a factory
    @get("/issues")
    def get_issues(self, x_version: Annotated[str, Header(default_factory=lambda: "2024.06")]): ...

    # Header parameter with a default value
    @get("/issues")
    def get_issues(self, my_parameter: Annotated[str, Header(alias="x-version")]): ...

Body parameter

You can send a body with your request using the Body annotation.

This body can be

  • a raw object with Body
  • a dict object with JsonBody
  • a Pydantic object with PydanticBody
  • one or more files with FileBody
class MyApi(RapidApi):

   # send a string in request content
   @post("/string")
   def post_string(self, body: Annotated[str, Body()]): ...

   # send a dict in request content as json
   @post("/string")
   def post_json(self, body: Annotated[dict, JsonBody()]): ...

   # send a Pydantic model in serialized as json
   @post("/model")
   def post_model(self, body: Annotated[MyPydanticClass, PydanticBody()]): ...

   # send a multiple files
   @post("/files")
   def post_files(self, report: Annotated[bytes, FileBody()], image: Annotated[bytes, FileBody()]): ...

   # send a form
   @post("/form")
   def post_form(self, my_param: Annotated[str, FormBody(alias="name")], extra_fields: Annotated[Dict[str, str], FormBody()]): ...

Xml Support

Xml is also supported is you use Pydantic-Xml, either for responses with response_class or for POST/PUT content with PydanticXmlBody.

class ResponseXmlRootModel(BaseXmlModel): ...

class MyApi(RapidApi):

   # parse response xml content
   @get("/get", response_class=ResponseXmlRootModel)
   def get_xml(self): ...

   # serialize xml model automatically
   @post("/post")
   def post_xml(self, body: Annotated[ResponseXmlRootModel, PydanticXmlBody()]): ...

Examples

See example directory for some examples

FAQs


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