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Forever Scalable

𝙲𝚒𝚝𝚞𝚜 is a python based, ultrafast web framework focusing on composing Web APIs all the more rapidly and with needless baggage.

Citus requires Python 3.8 or later.

The key features are:

• Fast: Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available.

• Fast to code: Increase the speed to develop features by about 200% to 300%. *

• Fewer bugs: Reduce about 40% of human (developer) induced errors. *

• Intuitive: Great editor support. Completion everywhere. Less time debugging.

• Easy: Designed to be easy to use and learn. Less time reading docs.

• Short: Minimize code duplication. Multiple features from each parameter declaration. Fewer bugs.

• Robust: Get production-ready code. With automatic interactive documentation.

• Standards-based: Based on (and fully compatible with) the open standards for APIs: OpenAPI (previously known as Swagger) and JSON Schema.

* estimation based on tests on an internal development team, building production applications.

• Support for Ansi, RGB and HTML color models
• Support for tabular presentation of data
• Interactive progressbars
• Code completions
• Nesting of commands
• Automatic help page generation
• Syntax highlighting
• Autosuggestions
• Key Binders

You can install citus via the Python Package Index (PyPI)

pip install -U citus

• Create a file main.py with:

from typing import Optional

import citus

app = citus.App()


@app.GET("/")
def read_root():
    return "Hello World"


@app.GET("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}

from typing import Optional
import quo

app = citus.App()


@app.GET("/")
async def read_root():
    return "Hello World"


@app.GET("/items/{item_id}")
async def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}

Run the server with:

$ citus main:app --reload

INFO:     Citus running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28720]
INFO:     Started server process [28722]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

Now modify the file main.py to receive a body from a PUT request.

Declare the body using standard Python types, thanks to Pydantic.

from typing import Optional

import citus

app = citus.App()


class Item(citus.Base):
    name: str
    price: float
    is_offer: Optional[bool] = None


@app.GET("/")
def read_root():
    return "Hello World"


@app.GET("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}


@app.GET("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}

The server should reload automatically (because you added --reload to the command above).

Open your browser at http://127.0.0.1:8000/items/33?q=checkuser.

You will see the JSON response as:

{"item_id": 33, "q": "checkuser"}

You already created an API that:

• Receives HTTP requests in the paths / and /items/{item_id}.
• Both paths take GET operations (also known as HTTP methods).
• The path /items/{item_id} has a path parameter item_id that should be an int.
• The path /items/{item_id} has an optional str _que

For discussions about the usage, development, and the future of quo, please join our Google community

• Community👨‍👩‍👦‍👦

If you have any suggestions, bug reports, or annoyances please report them to our issue tracker at Bug tracker or send an email to:

📥 [email protected]

This software is licensed under the MIT License. See the License file in the top distribution directory for the full license text.

Code of Conduct is adapted from the Contributor Covenant, version 1.2.0 available at Code of Conduct