Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The delete_user() service is a DELETE API method that uses a username path parameter to search for a login record for deletion."

A block of code is set as follows:

@app.delete("/ch01/login/remove/{username}")
def delete_user(username: str):
    del valid_users[username]
    return {"message": "deleted user"}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

@app.get("/ch01/login/")
def login(username: str, password: str):
    if valid_users.get(username) == None:
        return {"message": "user does not exist"}
    else:
        user = valid_users.get(username)

Any command-line input or output is written as follows:

pip install fastapi
pip install uvicorn[standard]

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: "Select System info from the Administration panel."

Tips or Important Notes

Appear like this.