write-whole-file (FURB103)

Derived from the refurb linter.

This rule is unstable and in preview. The --preview flag is required for use.

What it does

Checks for uses of open and write that can be replaced by pathlib methods, like Path.write_text and Path.write_bytes.

Why is this bad?

When writing a single string to a file, it's simpler and more concise to use pathlib methods like Path.write_text and Path.write_bytes instead of open and write calls via with statements.

Example

with open(filename, "w") as f:
    f.write(contents)

Use instead:

from pathlib import Path

Path(filename).write_text(contents)

References

• Python documentation: Path.write_bytes
• Python documentation: Path.write_text