• Install
• Notes
• Build and run
• HTTP Methods
• Testing post requests
• Using Async
• Swagger view
• Pydantic and Data Models
• Flow

• install fastapi Fastapi Website
• install uvicorn uvicorn Website
• Pydantic for Model (datatype) validation pydantic

pip install fastapi "uvicorn[standard"
pip install uvicorn

Fast API is production ready.

FAST API IS JUST A FRAMEWORK

you also need a Uvicorn server which is a ASGI server (asynchronous service gateway)

Uvicorn is similar to express js

Using data types: name:type or name:type=value

class userUpdateRequest():
	first_name:   str
	last_name:    str  = 'banana'

• Simply adds hints for the list

format is:

varName: List[object] = [obj, obj...]

example:

db: List[User] = [
	User(
		id= UUID("4142061b-3062-4206-9de6-28f9f516db29"),
		first_name="Adam",
		last_name='mcminge',
		gender = Gender.male,
		roles = [Role.admin,Role.user]
		)
]

• Make a main.py
• create a root
• run below:

uvicorn main:app --reload

• main is module name
• app is the instance of our application

Head Request Resource representation

Head Same as Get but does not return body

Post Submits an entity to a specified resource , often changing state in server

Put Put replaces all representations of target resource with current payload.

Delete Delete a specified resource

Connect Establishes a connection or tunnel to server.

Use thunder client in vs code or postman Switch to post add the json body of the user and send

use async lets us use await

@app.get('/')
async def read_results():
    results = await some_library()
    return results

simply go to localhost:8000/docs

• Automatically groups your API endpoints
• Assuming swagger looks at the functions under the defined endpoints

Non-interactive documentation

You can download it.

• Use typing, pydantic (basemodel) and others in the models.py

Examples:
Note the name:dataType format.

class User(BaseModel):
	# gives a uuid if not provided
	id:           Optional[UUID] =  uuid4()
	first_name:   str
	last_name:    str
	middle_name:  Optional[str]
	gender:       Gender 
	roles:        List[Role]