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Project Description

Input Algorithms

A DSL to assist with writing specifications describing valid data and testing that inputted data meets those defined specifications.

Why the name?

I got the inspiration from the movie Transcendence when a character says something to the effect of “We could do this if we had better input algorithms”.

Installation

Use pip!:

pip install input_algorithms

Or if you’re developing it:

pip install -e .
pip install -e ".[tests]"

USAGE

Here is an example to help you use the library.

from input_algorithms.validators import Validator
from input_algorithms.dictobj import dictobj
from input_algorithms import spec_base as sb
from input_algorithms.meta import Meta
import re

meta = Meta({},[])

# 1. Create a class defining your fields.
class PersonDictObj(dictobj):
    fields = ["name", "age"]

# 2. Create custom validate methods as required.
class ValidName(Validator):
    def validate(self, meta, val):
        matcher = re.compile("^[A-Za-z\ ]+$")
        if not matcher.match(val):
            raise Exception("{0} doesn't look like a name.".format(val))
        return val

class ValidAge(Validator):
    def validate(self, meta, val):
        if val > 120:
            raise Exception("I don't believe you are that old")
        return val

# 3. Tie together the pieces.
person_spec = sb.create_spec(
    PersonDictObj,
    name = sb.required(sb.valid_string_spec(ValidName())),
    age = sb.and_spec(sb.integer_spec(), ValidAge()),
)

# 4. Have some data
data = {"name": "Ralph", "age": 23}

# 5. Normalise the data into your object
normalised = person_spec.normalise(meta, data)

# 6. Use the object!
print("Name is {0}".format(normalised.name))
print("Age is {0}".format(normalised.age))

Tests

To run the tests in this project, just use the helpful script:

./test.sh

Or run tox:

tox
Release History

Release History

0.5.7

This version

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0.5.6

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0.5.5

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0.5.4

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0.5.3

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0.5.2

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0.5.1

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0.5

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0.4.7

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0.4.6

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0.4.5.5

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0.4.5.4

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0.4.5.3

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0.4.5.2

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0.4.5.1

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0.4.5

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0.4.4.9

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0.4.4.8

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0.4.4.7

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0.4.4.6

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0.4.4.5

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0.4.4.4

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0.4.4.3

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0.4.4.2

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0.4.4.1

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0.4.4

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0.4.3.1

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0.4.3

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0.4.2

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0.4.1.1

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0.4.1

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0.4

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0.3.5

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0.3.4

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0.3.3

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0.3.2

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0.3.1

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0.3

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0.2

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0.1

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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
input_algorithms-0.5.7.tar.gz (19.8 kB) Copy SHA256 Checksum SHA256 Source Feb 4, 2017

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