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 X/Twitter handles. Here is an example: “The process_frame function is used to preprocess frames from the game to make them more suitable for training an RL agent.”

A block of code is set as follows:

self.critic_linear = nn.Linear(512, 1)
self.actor_linear = nn.Linear(512, num_actions)

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

[default]
exten => s,1,Dial(Zap/1|30)
exten => s,2,Voicemail(u100)
exten => s,102,Voicemail(b100)
exten => i,1,Voicemail(s0)

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

streamlit run https://raw.githubusercontent.com/streamlit/my_apps/ master/my_app.py

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: “Once we have our tokens ready, we can enter our question and click Submit.”

Tips or important notes

Appear like this.