mirror of https://github.com/python/cpython
124 lines
5.5 KiB
ReStructuredText
124 lines
5.5 KiB
ReStructuredText
:mod:`!tomllib` --- Parse TOML files
|
|
====================================
|
|
|
|
.. module:: tomllib
|
|
:synopsis: Parse TOML files.
|
|
|
|
.. versionadded:: 3.11
|
|
|
|
.. moduleauthor:: Taneli Hukkinen
|
|
.. sectionauthor:: Taneli Hukkinen
|
|
|
|
**Source code:** :source:`Lib/tomllib`
|
|
|
|
--------------
|
|
|
|
This module provides an interface for parsing TOML 1.0.0 (Tom's Obvious Minimal
|
|
Language, `https://toml.io <https://toml.io/en/>`_). This module does not
|
|
support writing TOML.
|
|
|
|
.. seealso::
|
|
|
|
The :pypi:`Tomli-W package <tomli-w>`
|
|
is a TOML writer that can be used in conjunction with this module,
|
|
providing a write API familiar to users of the standard library
|
|
:mod:`marshal` and :mod:`pickle` modules.
|
|
|
|
.. seealso::
|
|
|
|
The :pypi:`TOML Kit package <tomlkit>`
|
|
is a style-preserving TOML library with both read and write capability.
|
|
It is a recommended replacement for this module for editing already
|
|
existing TOML files.
|
|
|
|
|
|
This module defines the following functions:
|
|
|
|
.. function:: load(fp, /, *, parse_float=float)
|
|
|
|
Read a TOML file. The first argument should be a readable and binary file object.
|
|
Return a :class:`dict`. Convert TOML types to Python using this
|
|
:ref:`conversion table <toml-to-py-table>`.
|
|
|
|
*parse_float* will be called with the string of every TOML
|
|
float to be decoded. By default, this is equivalent to ``float(num_str)``.
|
|
This can be used to use another datatype or parser for TOML floats
|
|
(e.g. :class:`decimal.Decimal`). The callable must not return a
|
|
:class:`dict` or a :class:`list`, else a :exc:`ValueError` is raised.
|
|
|
|
A :exc:`TOMLDecodeError` will be raised on an invalid TOML document.
|
|
|
|
|
|
.. function:: loads(s, /, *, parse_float=float)
|
|
|
|
Load TOML from a :class:`str` object. Return a :class:`dict`. Convert TOML
|
|
types to Python using this :ref:`conversion table <toml-to-py-table>`. The
|
|
*parse_float* argument has the same meaning as in :func:`load`.
|
|
|
|
A :exc:`TOMLDecodeError` will be raised on an invalid TOML document.
|
|
|
|
|
|
The following exceptions are available:
|
|
|
|
.. exception:: TOMLDecodeError
|
|
|
|
Subclass of :exc:`ValueError`.
|
|
|
|
|
|
Examples
|
|
--------
|
|
|
|
Parsing a TOML file::
|
|
|
|
import tomllib
|
|
|
|
with open("pyproject.toml", "rb") as f:
|
|
data = tomllib.load(f)
|
|
|
|
Parsing a TOML string::
|
|
|
|
import tomllib
|
|
|
|
toml_str = """
|
|
python-version = "3.11.0"
|
|
python-implementation = "CPython"
|
|
"""
|
|
|
|
data = tomllib.loads(toml_str)
|
|
|
|
|
|
Conversion Table
|
|
----------------
|
|
|
|
.. _toml-to-py-table:
|
|
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| TOML | Python |
|
|
+==================+======================================================================================+
|
|
| TOML document | dict |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| string | str |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| integer | int |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| float | float (configurable with *parse_float*) |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| boolean | bool |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| offset date-time | datetime.datetime (``tzinfo`` attribute set to an instance of ``datetime.timezone``) |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| local date-time | datetime.datetime (``tzinfo`` attribute set to ``None``) |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| local date | datetime.date |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| local time | datetime.time |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| array | list |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| table | dict |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| inline table | dict |
|
|
+------------------+--------------------------------------------------------------------------------------+
|
|
| array of tables | list of dicts |
|
|
+------------------+--------------------------------------------------------------------------------------+
|