📝 Add tutorials python src files

docs/tutorial/src/tutorial34-02.py

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+from fastapi import Body, FastAPI
+from pydantic import BaseModel, Schema
+
+app = FastAPI()
+
+
+class Item(BaseModel):
+    name: str
+    description: str = None
+    price: float
+    tax: float = None
+
+
+@app.put("/items/{item_id}")
+async def update_item(
+    *,
+    item_id: int,
+    item: Item = Body(
+        ...,
+        example={
+            "name": "Foo",
+            "description": "A very nice Item",
+            "price": 35.4,
+            "tax": 3.2,
+        },
+    )
+):
+    results = {"item_id": item_id, "item": item}
+    return results

docs/tutorial/src/tutorial69.py

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+from typing import Optional
+
+from fastapi import FastAPI
+from pydantic import BaseModel
+
+from app.models.config import USERPROFILE_DOC_TYPE
+from couchbase import LOCKMODE_WAIT
+from couchbase.bucket import Bucket
+from couchbase.cluster import Cluster, PasswordAuthenticator
+
+
+def get_bucket():
+    cluster = Cluster("couchbase://couchbasehost:8091")
+    authenticator = PasswordAuthenticator("username", "password")
+    cluster.authenticate(authenticator)
+    bucket: Bucket = cluster.open_bucket("bucket_name", lockmode=LOCKMODE_WAIT)
+    return bucket
+
+
+class User(BaseModel):
+    username: str
+    email: Optional[str] = None
+    full_name: Optional[str] = None
+    disabled: Optional[bool] = None
+
+
+class UserInDB(User):
+    type: str = USERPROFILE_DOC_TYPE
+    hashed_password: str
+
+    class Meta:
+        key: Optional[str] = None
+
+
+def get_user_doc_id(username):
+    return f"userprofile::{username}"
+
+
+def get_user(bucket: Bucket, username: str):
+    doc_id = get_user_doc_id(username)
+    result = bucket.get(doc_id, quiet=True)
+    if not result.value:
+        return None
+    user = UserInDB(**result.value)
+    user.Meta.key = result.key
+    return user
+
+
+# FastAPI specific code
+app = FastAPI()
+
+
+@app.get("/users/{username}")
+def read_user(username: str):
+    bucket = get_bucket()
+    user = get_user(bucket=bucket, username=username)
+    return user

docs/tutorial/src/tutorial70.py

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+from fastapi import FastAPI, Security
+from fastapi.security import OAuth2PasswordBearer
+
+app = FastAPI()
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
+
+
+@app.get("/items/")
+async def read_items(token: str = Security(oauth2_scheme)):
+    return {"token": token}

docs/tutorial/src/tutorial71.py

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+from typing import Optional
+
+from fastapi import Depends, FastAPI, Security
+from fastapi.security import OAuth2PasswordBearer
+from pydantic import BaseModel
+
+app = FastAPI()
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
+
+
+class User(BaseModel):
+    username: str
+    email: Optional[str] = None
+    full_name: Optional[str] = None
+    disabled: Optional[bool] = None
+
+
+def fake_decode_token(token):
+    return User(
+        username=token + "fakedecoded", email="john@example.com", full_name="John Doe"
+    )
+
+
+async def get_current_user(token: str = Security(oauth2_scheme)):
+    user = fake_decode_token(token)
+    return user
+
+
+@app.get("/users/me")
+async def read_users_me(current_user: User = Depends(get_current_user)):
+    return current_user

docs/tutorial/src/tutorial72.py

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+from typing import Optional
+
+from fastapi import Depends, FastAPI, Security
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from pydantic import BaseModel
+from starlette.exceptions import HTTPException
+
+fake_users_db = {
+    "johndoe": {
+        "username": "johndoe",
+        "full_name": "John Doe",
+        "email": "johndoe@example.com",
+        "password_hash": "fakehashedsecret",
+    }
+}
+
+app = FastAPI()
+
+
+def fake_hash_password(password: str):
+    return "fakehashed" + password
+
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
+
+
+class User(BaseModel):
+    username: str
+    email: Optional[str] = None
+    full_name: Optional[str] = None
+    disabled: Optional[bool] = None
+
+
+class UserInDB(User):
+    hashed_password: str
+
+
+def get_user(db, username: str):
+    if username in db:
+        user_dict = db[username]
+        return UserInDB(**user_dict)
+
+
+def fake_decode_token(token):
+    # This doesn't provide any security at all
+    # Check the next version
+    user = get_user(fake_users_db, token)
+    return user
+
+
+async def get_current_user(token: str = Security(oauth2_scheme)):
+    user = fake_decode_token(token)
+    if not user:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return user
+
+
+async def get_current_active_user(current_user: User = Depends(get_current_user)):
+    if not current_user.disabled:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user
+
+
+@app.post("/token")
+async def login(form_data: OAuth2PasswordRequestForm):
+    data = form_data.parse()
+    user_dict = fake_users_db[data.username]
+    user = UserInDB(**user_dict)
+    if not user:
+        raise HTTPException(status_code=400, detail="Incorrect email or password")
+    hashed_password = fake_hash_password(data.password)
+    if not hashed_password == user.hashed_password:
+        raise HTTPException(status_code=400, detail="Incorrect email or password")
+
+    return {"access_token": user.username, "token_type": "bearer"}
+
+
+@app.get("/users/me")
+async def read_users_me(current_user: User = Depends(get_current_active_user)):
+    return current_user

docs/tutorial/src/tutorial73.py

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+from datetime import datetime, timedelta
+from typing import Optional
+
+import jwt
+from fastapi import Depends, FastAPI, Security
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from jwt import PyJWTError
+from passlib.context import CryptContext
+from pydantic import BaseModel
+from starlette.exceptions import HTTPException
+from starlette.status import HTTP_403_FORBIDDEN
+
+# to get a string like this run:
+# openssl rand -hex 32
+SECRET_KEY = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
+ALGORITHM = "HS256"
+TOKEN_SUBJECT = "access"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+
+fake_users_db = {
+    "johndoe": {
+        "username": "johndoe",
+        "full_name": "John Doe",
+        "email": "johndoe@example.com",
+        "password_hash": "$2b$12$EixZaYVK1fsbw1ZfbX3OXePaWxn96p36WQoeG6Lruj3vjPGga31lW",
+    }
+}
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+
+class TokenPayload(BaseModel):
+    username: str = None
+
+
+class User(BaseModel):
+    username: str
+    email: Optional[str] = None
+    full_name: Optional[str] = None
+    disabled: Optional[bool] = None
+
+
+class UserInDB(User):
+    hashed_password: str
+
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
+
+app = FastAPI()
+
+
+def verify_password(plain_password, hashed_password):
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password):
+    return pwd_context.hash(password)
+
+
+def get_user(db, username: str):
+    if username in db:
+        user_dict = db[username]
+        return UserInDB(**user_dict)
+
+
+def authenticate_user(fake_db, username: str, password: str):
+    user = get_user(fake_db, username)
+    if not user:
+        return False
+    if not verify_password(password, user.hashed_password):
+        return False
+    return user
+
+
+def create_access_token(*, data: dict, expires_delta: timedelta = None):
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=15)
+    to_encode.update({"exp": expire, "sub": TOKEN_SUBJECT})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+async def get_current_user(token: str = Security(oauth2_scheme)):
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        token_data = TokenPayload(**payload)
+    except PyJWTError:
+        raise HTTPException(
+            status_code=HTTP_403_FORBIDDEN, detail="Could not validate credentials"
+        )
+    user = get_user(fake_users_db, username=token_data.username)
+    return user
+
+
+async def get_current_active_user(current_user: User = Depends(get_current_user)):
+    if not current_user.disabled:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user
+
+
+@app.post("/token", response_model=Token)
+async def route_login_access_token(form_data: OAuth2PasswordRequestForm):
+    data = form_data.parse()
+    user = authenticate_user(fake_users_db, data.username, data.password)
+    if not user:
+        raise HTTPException(status_code=400, detail="Incorrect email or password")
+    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    return {
+        "access_token": create_access_token(
+            data={"username": data.username}, expires_delta=access_token_expires
+        ),
+        "token_type": "bearer",
+    }
+
+
+@app.get("/users/me", response_model=User)
+async def read_users_me(current_user: User = Depends(get_current_active_user)):
+    return current_user
+
+
+@app.get("/users/me/items/")
+async def read_own_items(current_user: User = Depends(get_current_active_user)):
+    return [{"item_id": "Foo", "owner": current_user.username}]

docs/tutorial/src/tutorial74.py

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+from fastapi import APIRouter
+
+router = APIRouter()
+
+
+@router.get("/users/")
+async def read_users():
+    return [{"username": "Foo"}, {"username": "Bar"}]
+
+
+@router.get("/users/{username}")
+async def read_user(username: str):
+    return {"username": username}
+
+
+@router.get("/users/me")
+async def read_user_me():
+    return {"username": "fakecurrentuser"}

docs/tutorial/src/tutorial75.py

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+from fastapi import APIRouter
+
+router = APIRouter()
+
+
+@router.get("/")
+async def read_items():
+    return [{"name": "Item Foo"}, {"name": "item Bar"}]
+
+
+@router.get("/{item_id}")
+async def read_item(item_id: str):
+    return {"name": "Fake Specific Item", "item_id": item_id}

docs/tutorial/src/tutorial76.py

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+from fastapi import FastAPI
+
+from .tutorial74 import router as users_router
+from .tutorial75 import router as items_router
+
+app = FastAPI()
+
+app.include_router(users_router)
+app.include_router(items_router, prefix="/items")

docs/tutorial/src/tutorial77.py

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+from fastapi import FastAPI
+
+app = FastAPI(
+    title="My Super Project",
+    description="This is a very fancy project, with auto docs for the API and everything",
+    version="2.5.0",
+)
+
+
+@app.get("/items/")
+async def read_items():
+    return [{"name": "Foo"}]

docs/tutorial/src/tutorial78.py

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+from fastapi import FastAPI
+
+app = FastAPI(
+    title="My Super Project", version="2.5.0", openapi_url="/api/v1/openapi.json"
+)
+
+
+@app.get("/items/")
+async def read_items():
+    return [{"name": "Foo"}]

docs/tutorial/src/tutorial79.py

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+from fastapi import FastAPI
+
+app = FastAPI(
+    title="My Super Project",
+    version="2.5.0",
+    openapi_url="/api/v1/openapi.json",
+    docs_url="/api/v1/docs",
+    redoc_url=None,
+)
+
+
+@app.get("/items/")
+async def read_items():
+    return [{"name": "Foo"}]