tomlrt¶

A format-preserving TOML reader and writer for Python.

Parse a document, edit it, dump it, and the bytes you didn't touch round-trip exactly — comments, whitespace, string style, and number formatting all intact.

import tomlrt

with open("pyproject.toml", "rb") as f:
    doc = tomlrt.load(f)

doc["project"]["version"] = "0.2.0"
doc["project"]["dependencies"].append("requests>=2")

print(tomlrt.dumps(doc))   # comments and layout are preserved

Where next¶

• Quickstart — parse, edit, dump.
• Building documents — start from scratch with document().
• Typed access — type-safe traversal and conversion back to plain Python.
• Editing documents — structural assignment, live views, layout control.
• Comments — the comment API.
• Errors — exception types.
• API reference — full public surface.