phx-filters 2.0.0

Examples

Validate a latitude position and round to manageable precision:

(
    f.Required |
    f.Decimal |
    f.Min(Decimal(-90)) |
    f.Max(Decimal(90)) |
    f.Round(to_nearest='0.000001')
).apply('-12.0431842')

Parse an incoming value as a datetime, convert to UTC and strip tzinfo:

f.Datetime(naive=True).apply('2015-04-08T15:11:22-05:00')

Convert every value in an iterable (e.g., list) to unicode and strip leading/trailing whitespace. This also applies Unicode normalization, strips unprintable characters and normalizes line endings automatically.

f.FilterRepeater(f.Unicode | f.Strip).apply([
    b'\xe2\x99\xaa ',
    b'\xe2\x94\x8f(\xc2\xb0.\xc2\xb0)\xe2\x94\x9b ',
    b'\xe2\x94\x97(\xc2\xb0.\xc2\xb0)\xe2\x94\x93 ',
    b'\xe2\x99\xaa ',
])

Parse a JSON string and check that it has correct structure:

(
    f.JsonDecode |
    f.FilterMapper(
        {
            'birthday':  f.Date,
            'gender':    f.CaseFold | f.Choice(choices={'m', 'f', 'x'}),

            'utcOffset':
                f.Decimal |
                f.Min(Decimal('-15')) |
                f.Max(Decimal('+15')) |
                f.Round(to_nearest='0.25'),
        },

        allow_extra_keys   = False,
        allow_missing_keys = False,
    )
).apply('{"birthday":"1879-03-14", "gender":"M", "utcOffset":"1"}')

Requirements

Filters is compatible with the following Python versions:

• 3.8

• 3.7

• 3.6

• 3.5

Installation

Install the latest stable version via pip:

pip install phx-filters

Running Unit Tests

To run unit tests after installing from source:

python setup.py test

This project is also compatible with tox, which will run the unit tests in different virtual environments (one for each supported version of Python).

Install the package with the test-runner extra to set up the necessary dependencies, and then you can run the tests with the tox command:

pip install -e .[test-runner]
tox -p all

Documentation

Documentation is available on ReadTheDocs.

If you are installing from source (see above), you can also build the documentation locally:

1. Install extra dependencies (you only have to do this once):

   pip install '.[docs-builder]'

2. Switch to the docs directory:

   cd docs

3. Build the documentation:

   make html