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Project Description

A minimal DSL for Python

Minilanguage is a minimal DSL for Python written with Ply.

Is it intended to be a starting point for writing more specific DSLs.

Currently, it only implements simple boolean logic and objects/strings evaluation.

Example

from minilanguage.grammar import FeatureParser

context = {
    'country': 'US',
    'user': {
        'username': 'regular_user',
        'data_bag': {
            "payload": 'abc',
        }
    }
}

parser = FeatureParser()
parser.build()

parser.evaluate("2 + 0.5", context)
# 2.5

parser.evaluate("12 + 12", context)
# 24

parser.evaluate("12 == 12", context)
# True

parser.evaluate("12 != 12", context)
# False

parser.evaluate("12 and False", context)
# False

parser.evaluate("12 or False", context)
# 12

parser.evaluate("12 > 10", context)
# True

parser.evaluate("12 < 10", context)
# False

parser.evaluate("12 <= 12", context)
# True

parser.evaluate("12 >= 12", context)
# True

parser.evaluate("country", context)
# 'US'

parser.evaluate("country == 'US'", context)
# True

parser.evaluate("user['username']", context)
# 'regular_user'

parser.evaluate("'a', 'b'", context)
# tuple('a', 'b')

parser.evaluate("user['data_bag']['payload']", context)
# 'abc'

parser.evaluate("user.get('missing_key', 'default')", context)
# 'default'

parser.evaluate("12 if False else 14", context)
# 14

License

This software is released under the MIT License.

Release History

Release History

1.0.3

This version

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1.0.2

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1.0.1

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1.0.0

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0.3.1

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0.3.0

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0.2.0

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0.1.0

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0.0.1

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TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
minilanguage-1.0.3-py2.py3-none-any.whl (7.1 kB) Copy SHA256 Checksum SHA256 2.7 Wheel Dec 24, 2015
minilanguage-1.0.3.tar.gz (5.5 kB) Copy SHA256 Checksum SHA256 Source Dec 24, 2015

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