pkulev / toml

Python lib for TOML

TOML

A Python library for parsing and creating TOML.

The module passes the TOML test suite.

See also:

• The TOML Standard
• The currently supported TOML specification

Installation

To install the latest release on PyPI, simply run:

pip install toml

Or to install the latest development version, run:

git clone https://github.com/uiri/toml.git
cd toml
python setup.py install

Quick Tutorial

toml.loads takes in a string containing standard TOML-formatted data and returns a dictionary containing the parsed data.

>>> import toml
>>> toml_string = """
... # This is a TOML document.
...
... title = "TOML Example"
...
... [owner]
... name = "Tom Preston-Werner"
... dob = 1979-05-27T07:32:00-08:00 # First class dates
...
... [database]
... server = "192.168.1.1"
... ports = [ 8001, 8001, 8002 ]
... connection_max = 5000
... enabled = true
...
... [servers]
...
...   # Indentation (tabs and/or spaces) is allowed but not required
...   [servers.alpha]
...   ip = "10.0.0.1"
...   dc = "eqdc10"
...
...   [servers.beta]
...   ip = "10.0.0.2"
...   dc = "eqdc10"
...
... [clients]
... data = [ ["gamma", "delta"], [1, 2] ]
...
... # Line breaks are OK when inside arrays
... hosts = [
...   "alpha",
...   "omega"
... ]
... """
>>> parsed_toml = toml.loads(toml_string)

toml.dumps takes a dictionary and returns a string containing the corresponding TOML-formatted data.

>>> new_toml_string = toml.dumps(parsed_toml)
>>> print(new_toml_string)
title = "TOML Example"
[owner]
name = "Tom Preston-Werner"
dob = 1979-05-27T07:32:00Z
[database]
server = "192.168.1.1"
ports = [ 8001, 8001, 8002,]
connection_max = 5000
enabled = true
[clients]
data = [ [ "gamma", "delta",], [ 1, 2,],]
hosts = [ "alpha", "omega",]
[servers.alpha]
ip = "10.0.0.1"
dc = "eqdc10"
[servers.beta]
ip = "10.0.0.2"
dc = "eqdc10"

toml.dump takes a dictionary and a file descriptor and returns a string containing the corresponding TOML-formatted data.

>>> with open('new_toml_file.toml', 'w') as f:
...     new_toml_string = toml.dump(parsed_toml, f)
>>> print(new_toml_string)
title = "TOML Example"
[owner]
name = "Tom Preston-Werner"
dob = 1979-05-27T07:32:00Z
[database]
server = "192.168.1.1"
ports = [ 8001, 8001, 8002,]
connection_max = 5000
enabled = true
[clients]
data = [ [ "gamma", "delta",], [ 1, 2,],]
hosts = [ "alpha", "omega",]
[servers.alpha]
ip = "10.0.0.1"
dc = "eqdc10"
[servers.beta]
ip = "10.0.0.2"
dc = "eqdc10"

For more functions, view the API Reference below.

Note

For Numpy users, by default the data types np.floatX will not be translated to floats by toml, but will instead be encoded as strings. To get around this, specify the TomlNumpyEncoder when saving your data.

>>> import toml
>>> import numpy as np
>>> a = np.arange(0, 10, dtype=np.double)
>>> output = {'a': a}
>>> toml.dumps(output)
'a = [ "0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "6.0", "7.0", "8.0", "9.0",]\n'
>>> toml.dumps(output, encoder=toml.TomlNumpyEncoder())
'a = [ 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0,]\n'

API Reference

toml.load(f, _dict=dict)

Parse a file or a list of files as TOML and return a dictionary.

Args:	f: A path to a file, pathlib object, list of filepaths (to be read into single object) or a file descriptor _dict: The class of the dictionary object to be returned
Returns:	A dictionary (or object _dict) containing parsed TOML data
Raises:	TypeError: When f is an invalid type or is a list containing invalid types TomlDecodeError: When an error occurs while decoding the file(s)

toml.loads(s, _dict=dict)

Parse a TOML-formatted string to a dictionary.

Args:	s: The TOML-formatted string to be parsed _dict: Specifies the class of the returned toml dictionary
Returns:	A dictionary (or object _dict) containing parsed TOML data
Raises:	TypeError: When a non-string object is passed TomlDecodeError: When an error occurs while decoding the TOML-formatted string

toml.dump(o, f, encoder=None)

Write a dictionary to a file containing TOML-formatted data

Args:	o: An object to be converted into TOML f: A File descriptor where the TOML-formatted output should be stored encoder: An instance of TomlEncoder (or subclass) for encoding the object. If None, will default to TomlEncoder
Returns:	A string containing the TOML-formatted data corresponding to object o
Raises:	TypeError: When anything other than file descriptor is passed

toml.dumps(o, encoder=None)

Create a TOML-formatted string from an input object

Args:	o: An object to be converted into TOML encoder: An instance of TomlEncoder (or subclass) for encoding the object. If None, will default to TomlEncoder
Returns:	A string containing the TOML-formatted data corresponding to object o

Licensing

This project is released under the terms of the MIT Open Source License. View LICENSE.txt for more information.

toml's Issues

What is this fork?

I was disappointed by the state of TOML libraries in python, so I decided to fork library which is better than others.

• tomli/tomli_w: I don't get those arguments about splitting writer and reader. Everyone will question that decision after discovering that new shiny python3.11 tomllib has no dump() method. Also writer is kinda bad and inextensible from user's code, also has no support for pathlib objects encoding.
• tomlkit: too difficult to understand and has no support for pathlib objects too.
• other shinenigans that already died like qtoml, libtoml, pytoml.

Closest goals to achieve:

• DONE get rid of python <= 3.6 compatibility code
• DONE process pathlib objects in the base TomlEncoder
• replace travis CI with Github Actions
• make release on PyPI, for sure by different name, because @uiri is inaccesible for couple of years
• TOML v1.0.0/1.1.0 spec support