Functions for Interacting with the Terminal

starlark_tugger.can_prompt() → bool

Returns whether we are capable of prompting for user input.

If this returns False, functions like prompt_input() and prompt_password() will be unable to collect input from the user and will error unless a default value is provided.

starlark_tugger.prompt_confirm(prompt: str, default: Optional[bool] = None) → bool

Prompt the user to confirm something.

This will print the provided prompt and wait for user input to confirm it.

If y or n is pressed, this evaluates to True or False, respectively. If the escape key is pressed, an error is raised.

If stdin is not interactive (e.g. it is connected to /dev/null), this will return default if provided or raise an error otherwise.

starlark_tugger.prompt_input(prompt: str, default: Optional[str] = None) → str

Prompt the user for input on the terminal.

This will print a prompt with the given prompt text to stderr. If default is provided, the default value will printed and used if no input is provided.

The string constituting the raw input (without a trailing newline) is returned.

If stdin is not interactive (e.g. it is connected to /dev/null), this will return default if provided or raise an error otherwise.

starlark_tugger.prompt_password(prompt: str, confirm: bool = False, default: Optional[str] = None) → str

Prompt the user for a password input on the terminal.

This will print a prompt with the given prompt text to stderr.

When the user inputs their password, its content will not be printed back to the terminal.

If confirm is True, the user will be prompted to confirm the hidden value they just entered and subsequent prompts will be attempted until values agree.

If stdin is not interactive (e.g. it is connected to /dev/null), this will return default if provided or raise an error if not.

The password value is stored in plain text in memory and treated like any other string value.