launch.substitutions.file_content module

Module for the FileContent substitution.

class launch.substitutions.file_content.FileContent

Bases: Substitution

Substitution that reads the contents of a file.

If the file is not found a SubstitutionFailure error is raised.

__init__(path: str | Substitution | Iterable[str | Substitution]) → None

Create a FileContent substitution.

describe() → str

Return a description of this substitution as a string.

classmethod parse(data: Sequence[str | Substitution | Iterable[str | Substitution]])

Parse FileContent substitution.

property path: List[Substitution]

Getter for path.

perform(context: LaunchContext) → str

Perform the substitution by evaluating the expression.