validator.py 0.4.0

A library for validating that dictionary values meet certain sets of parameters. Much like form validators, but for dicts.

validator.py [](https://travis-ci.org/mansam/validator.py)
============

A library for validating that dictionary values meet certain sets of parameters. Much like form validators, but for dicts.

## Usage Example

First, install it from PyPI.

pip install validator.py


```python

from validator import Required, Not, Truthy, Blank, Range, Equals, In, validate

# let's say that my dictionary needs to meet the following rules...
rules = {
"foo": [Required, Equals(123)],
"bar": [Required, Truthy()],
"baz": [In(["spam", "eggs", "bacon"])],
"qux": [Not(Range(1, 100))] # by default, Range is inclusive
}

# then this following dict would pass:
passes = {
"foo": 123,
"bar": True, # or a non-empty string, or a non-zero int, etc...
"baz": "spam",
"qux": 101
}
print validate(rules, passes)
# (True, {})

# but this one would fail
fails = {
"foo": 321,
"bar": False, # or 0, or [], or an empty string, etc...
"baz": "barf",
"qux": 99
}
print validate(rules, fails)
# (False,
# {
# 'foo': ["must be equal to '123'"],
# 'bar': ['must be True-equivalent value'],
# 'baz': ["must be one of ['spam', 'eggs', 'bacon']"],
# 'qux': ['must not fall between 1 and 100']
# })
```